F75 F80 F90 Inline 4 Engine | Yamaha Outboard

Compatible Applications

OEM & Cross Reference Numbers

Matching Main Bearing Set

Pro Marine 4CYLSSMAIN Main Bearing Set

Matching Pro Marine main bearing set for Yamaha F75-F115 4-stroke rebuilds. Use this main bearing set with the correct rod bearing set when servicing the crankshaft and connecting rods.

View 4CYLSSMAIN Main Bearing Set

Required Yamaha FC-W 20W40 Engine Oil

This is not optional: Pro Marine requires Yamaha FC-W 20W40 engine oil when using these Yamaha 4-stroke bearings.

Yamaha FC-W 20W40 Engine Oil - Gallon

Required Yamaha FC-W 20W40 engine oil for use with these Pro Marine Yamaha 4-stroke rod bearings.

View Yamaha FC-W 20W40 Gallon

Yamaha FC-W 20W40 Engine Oil - Quart

Quart-size Yamaha FC-W 20W40 oil for topping off, break-in service, or ordering the exact amount needed for your rebuild.

View Yamaha FC-W 20W40 Quart

Popular Yamaha F75-F115 Rebuild Parts

Customers rebuilding Yamaha F75-F115 4-stroke powerheads often replace related piston, ring, valve, gasket, and rod bolt components during the same repair.

Vertex Standard Piston Kit

Standard-size piston kit for Yamaha F75-F115 rebuild work.

View Standard Piston Kit

Vertex .010 Oversize Piston Kit

.010 oversize piston kit for machined-cylinder rebuilds.

View .010 Oversize Piston Kit

Vertex .020 Oversize Piston Kit

.020 oversize piston kit for larger-bore rebuild applications.

View .020 Oversize Piston Kit

STD OEM Ring Kit

Standard-size OEM piston ring kit for Yamaha rebuild service.

View STD OEM Ring Kit

.010 Oversize OEM Ring Kit

OEM .25mm / .010 oversize ring kit for oversize piston rebuilds.

View .010 Oversize OEM Ring Kit

Rod Bolt

Replacement connecting rod bolt for Yamaha F75-F115 rebuild work.

View Rod Bolt

Intake Valve

Replacement intake valve, 96.9mm length and 29mm head diameter.

View Intake Valve

Intake Valve Seal

Replacement intake valve seal for Yamaha 4-stroke rebuild service.

View Intake Valve Seal

Exhaust Valve

Replacement exhaust valve, 99.3mm length and 23.9mm head diameter.

View Exhaust Valve

Exhaust Valve Seal

Replacement exhaust valve seal for Yamaha 4-stroke rebuild service.

View Exhaust Valve Seal

Valve Spring

Replacement valve spring for Yamaha F75-F115 cylinder head service.

View Valve Spring

Cylinder Head Gasket

Replacement head gasket for Yamaha F75-F115 powerhead service.

View Head Gasket

Powerhead Gasket Kit

Powerhead gasket kit for Yamaha F75-F115 rebuild and reassembly work.

View Powerhead Gasket Kit

What This Part is Used For

Rod bearings support the connecting rods on the crankshaft journals inside the Yamaha 4-stroke powerhead. During a rebuild, worn or damaged rod bearings should be replaced to help restore proper crankshaft support, oil clearance, and long-term engine reliability.

This Pro Marine rod bearing set is designed to make Yamaha F75-F100 rebuilds more straightforward by removing the need to match Yamaha bearing color codes or measure each location with Plastigauge.

Key Features and Benefits

• Pro Marine Yamaha 4-stroke rod bearing set
• Part number F75SSROD
• Designed for Yamaha F75, F90, and F100 4-stroke rebuild applications
• One-size bearing set for the listed F75-F100 application
• No Yamaha bearing color-code selection required
• No Plastigauge needed
• Matching 4CYLSSMAIN main bearing set linked above
• Must be used with Yamaha FC-W 20W40 engine oil

FAQ

What engines does this rod bearing set fit?
This set is for Yamaha F75, F90, and F100 4-stroke applications using the matching Pro Marine bearing system.

Do I need to select Yamaha bearing color codes?
No. These Pro Marine Yamaha 4-stroke bearings do not require Yamaha color-code selection.

Do I need Plastigauge?
No. Pro Marine Yamaha 4-stroke bearings do not require Plastigauge sizing.

What oil must be used with these bearings?
You must use Yamaha FC-W 20W40 engine oil. Links to the gallon and quart are included above.

Which main bearing set goes with this rod bearing set?
The matching main bearing set is 4CYLSSMAIN, linked above.

Is this the correct rod bearing set for F115?
No. For Yamaha F115 applications, use the Pro Marine 4CYLSSROD rod bearing set instead.

Should I verify fitment?
Yes. Always verify your Yamaha model, serial number, and internal engine part requirements before ordering rebuild components.

Searchable Terms

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Piston Size & Application

OEM & Cross Reference Piston Family

Yamaha Outboard Fitment

Mercury 115HP EFI Fitment

Other Piston Options

Vertex Standard Piston - 24228STD

Size: 79.00mm Standard

Standard Vertex piston for compatible cylinders that remain within factory bore-size limits.

First OEM: 68V-W1164-02-00

View Vertex Standard Piston

Vertex .010 Oversize Piston - 24228025

Size: .010 / .25mm Oversize

Intermediate oversize Vertex option for cylinders that can be finished at .010 oversize.

First OEM Reference: 60C-W1164-10-00

View Vertex .010 Piston

Wiseco Standard Piston - 3207PS

Size: 79.00mm Standard

Alternate standard-size Wiseco piston for compatible Yamaha F115 and Mercury 115 EFI engine rebuilds.

View Wiseco Standard Piston

Wiseco .020 Oversize Piston - 3207P2

Size: 79.5mm / .020 Oversize

Alternate .020 oversize Wiseco option for cylinders properly machined to the required finished bore.

View Wiseco .020 Piston

Yamaha OEM Piston Ring Options

Yamaha OEM Standard Ring Kit - 11605

Size: Standard 79mm

First OEM: 6D8-11603-00-00

OEM standard ring option for compatible standard-size 79mm pistons.

View Standard OEM Rings

Yamaha OEM .25mm Oversize Ring Kit - 11606

Size: .25mm / approximately .010 Oversize

First OEM: 6D8-11604-00-00

OEM ring option for the corresponding Yamaha .25mm oversize piston configuration.

View .25mm OEM Rings

Replacement Cylinder Sleeves

If cylinder damage cannot be corrected with a .020 overbore, replacement cylinder sleeves may be required.

Advanced Sleeve 1185SC

Straight 4-stroke cylinder sleeve for compatible engine rebuilding.

Verify sleeve dimensions, block bore and finished cylinder requirements before machining.

View 1185SC Sleeve

Advanced Sleeve 1185SA

Alternate replacement cylinder sleeve option for compatible Yamaha / Mercury four-stroke engine rebuilds.

Compare sleeve dimensions with the block before installation.

View 1185SA Sleeve

Main & Connecting Rod Bearings

Pro Marine Main Bearing Set - 4CYLSSMAIN

Complete one-size crankshaft main bearing set for compatible Yamaha four-cylinder engines.

First OEM Reference: 6D8-11416-00-00

Eliminates Yamaha bearing color-code selection and Plastigauge sizing.

View Main Bearing Set

Pro Marine F115 Rod Bearing Set - 4CYLSSROD

Complete one-size connecting rod bearing set for compatible Yamaha F115 applications.

First OEM Reference: 68V-11656-00-00

Eliminates the factory Yamaha bearing color selection process.

View Rod Bearing Set

Complete Powerhead Gasket Kit

Pro Marine Powerhead Gasket Kit - 6803

Complete gasket kit for compatible Yamaha F75-F115 powerhead rebuilds.

Recommended when the engine is disassembled for piston replacement, cylinder machining, bearing service or a complete powerhead rebuild.

OEM Families: 6D8-W0001, 67F-W0001 and 68V-W0001

View Powerhead Gasket Kit

Piston Size Guide

Shop Yamaha Engine Rebuild Parts by Model

Find additional pistons, rings, bearings, valves, gaskets, sleeves and related internal engine components in Pro Marine's Yamaha Engine Rebuild Parts by Model section.

Shop Yamaha Engine Rebuild Parts by Model

When to Use a .020 Oversize Piston

A .020 oversize piston is used when cylinder wear, scoring or damage requires enough machining that the cylinder can no longer remain at standard size or .010 oversize.

Before machining, accurately measure cylinder diameter, taper and out-of-round. The finished bore must provide the correct piston-to-wall clearance for the Vertex piston.

When Should a Cylinder be Sleeved Instead?

If cylinder damage, corrosion or previous machining prevents the bore from being restored at .020 oversize, a replacement cylinder sleeve may be required.

The replacement sleeve is installed and then finished to the correct bore for whichever piston size will be used in the rebuilt engine.

Parts to Inspect During a Powerhead Rebuild

• Cylinder bore diameter
• Cylinder taper and out-of-round
• Piston-to-wall clearance
• Piston rings and ring end gap
• Connecting rods
• Connecting rod bolts
• Connecting rod bearings
• Crankshaft main bearings
• Crankshaft journals
• Cylinder head and valves
• Valve stem seals
• Oil passages and lubrication system
• Powerhead gaskets and seals

Key Features and Benefits

• Vertex oversize piston kit
• Vertex part number 24228050
• .020 / .50mm oversize
• 79.5mm nominal piston size
• Fits extensive Yamaha F115 and LF115 applications
• Fits select Yamaha F75 and F90 applications
• Fits select Mercury 115HP EFI engines
• Vertex standard piston linked above
• Vertex .010 oversize piston linked above
• Wiseco standard and .020 piston alternatives linked above
• Yamaha OEM ring options linked above
• Replacement cylinder sleeves linked above
• Main and connecting rod bearing sets linked above
• Complete powerhead gasket kit linked above

FAQ

What size is Vertex 24228050?
It is a .020 / .50mm oversize piston, approximately 79.5mm.

Is 24228050 a standard-size piston?
No. The standard Vertex piston is the 24228STD 79.00mm piston linked above.

Can I install this piston in a standard cylinder?
No. The cylinder must be properly bored and finished for the .020 oversize piston.

Does this fit Yamaha F115?
Yes. The supplied engine fitment includes extensive Yamaha F115 and LF115 applications.

Does it fit Mercury 115 EFI?
Yes. Supplied Mercury fitment includes 0T178500 thru 0T800999, 0T801000 thru 1B226999, and 1B227000 thru 1B366822.

Do you have a .010 oversize piston?
Yes. The Vertex 24228025 is the .010 / .25mm oversize option.

Do you have another .020 piston option?
Yes. The Wiseco 3207P2 79.5mm piston is an alternate .020 oversize option.

What standard pistons are available?
Pro Marine stocks both the Vertex 24228STD and Wiseco 3207PS standard 79mm pistons.

Are replacement cylinder sleeves available?
Yes. Advanced Sleeve 1185SA and 1185SC options are linked above.

What main bearings are available?
The Pro Marine 4CYLSSMAIN main bearing set is linked above.

What connecting rod bearings are available?
The Pro Marine 4CYLSSROD connecting rod bearing set is linked above.

Is a complete powerhead gasket kit available?
Yes. The Pro Marine 6803 Powerhead Gasket Kit is linked above.

Searchable Terms

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OEM & Cross Reference Numbers

Yamaha Outboard Fitment

.020 Oversize Wiseco Piston Option

Wiseco .020 Oversize Piston Kit - 79.5mm - 3208P2

Oversize Wiseco piston for compatible Yamaha F75, F80, F90 and F100 rebuilds where the cylinder has been machined to 79.5mm / .020 oversize.

OEM References: 6D8-W1164-00-00, 6D8-W1164-30-00, 6D8-W1164-31-00, 67F-11640-00-00

View .020 Oversize Wiseco Piston

Replacement Cylinder Sleeves

If a cylinder is damaged beyond a normal overbore repair, Pro Marine also stocks replacement Advanced Sleeve options for this Yamaha four-stroke engine family.

Advanced Sleeve 1185SC - Straight 4-Stroke Sleeve

Replacement cylinder sleeve for compatible Yamaha four-stroke rebuilds. Pro Marine lists this sleeve with a 3.118" standard bore, 3.310" OD and 5.195" length. :contentReference[oaicite:1]{index=1}

View 1185SC Cylinder Sleeve

Advanced Sleeve 1185SA - Straight 4-Stroke Sleeve

Alternate Advanced Sleeve option. Pro Marine lists this sleeve with a 3.118" bore, 3.270" OD and 5.195" length. :contentReference[oaicite:2]{index=2}

View 1185SA Cylinder Sleeve

Crankshaft & Connecting Rod Bearings

Rebuilding the complete powerhead? Pro Marine stocks one-size main and rod bearing sets for this Yamaha engine family. These bearing sets eliminate Yamaha color-code selection and Plastigauge sizing. :contentReference[oaicite:3]{index=3}

Pro Marine F75-F115 Main Bearing Set - 4CYLSSMAIN

Complete crankshaft main bearing set for compatible Yamaha F75-F115 four-stroke engines.

First OEM Reference: 6D8-11416-00-00

One-size bearing system with no Yamaha color-code selection or Plastigauge sizing required. :contentReference[oaicite:4]{index=4}

View Main Bearing Set

Pro Marine F75-F100 Connecting Rod Bearing Set - F75SSROD

Matching one-size connecting rod bearing set for compatible Yamaha F75, F90 and F100 four-stroke applications.

Designed to eliminate Yamaha color-code selection and Plastigauge bearing sizing. :contentReference[oaicite:5]{index=5}

View Connecting Rod Bearing Set

Complete Powerhead Gasket Kit

Pro Marine Powerhead Gasket Kit - 6803

Complete powerhead gasket kit for compatible Yamaha F75-F115 engine rebuilds.

Recommended when the engine is being fully disassembled for pistons, bearings, cylinder repair or other major internal work.

OEM Families: 6D8-W0001, 67F-W0001 and 68V-W0001

View Powerhead Gasket Kit

Shop Yamaha Engine Rebuild Parts by Model

Need the rest of the components for your rebuild? Use our Yamaha Engine Rebuild Parts by Model section to find pistons, rings, bearings, valves, gaskets, sleeves and related internal engine parts.

What is Included

This listing is for the Wiseco 3208PS standard-size piston kit. Confirm the exact kit contents shown on the product listing before ordering any additional rings, pins, clips or related components separately.

What This Piston is Used For

The piston transfers combustion force through the connecting rod to the crankshaft. It must maintain the correct clearance within the cylinder bore while supporting the piston rings that seal combustion pressure and control engine oil.

During a powerhead rebuild, piston selection should be based on the actual finished cylinder-bore measurement rather than simply replacing the original piston with the same nominal size.

Standard Piston or Oversize Piston?

Parts to Inspect During a Piston Replacement

• Cylinder bore condition and finished bore size
• Piston rings
• Connecting rod bearings
• Connecting rod bolts
• Crankshaft journals
• Crankshaft main bearings
• Cylinder head and valves
• Valve stem seals
• Oil passages and lubrication system
• Powerhead gaskets and seals

Key Features and Benefits

• Wiseco standard-size piston kit
• Wiseco item 3208PS
• 79.00mm standard bore size
• Fits select Yamaha F75 four-stroke engines
• Fits select Yamaha F80 four-stroke engines
• Fits select Yamaha F90 four-stroke engines
• Fits select Yamaha F100 four-stroke engines
• Replaces Yamaha 6D8-W1164-00-00
• Replaces Yamaha 6D8-W1164-30-00
• Replaces Yamaha 6D8-W1164-31-00
• Replaces Yamaha 67F-11640-00-00
• .020 / 79.5mm Wiseco piston option linked above
• Replacement cylinder sleeves linked above
• Matching main and connecting rod bearings linked above
• Complete powerhead gasket kit linked above

FAQ

What size is the Wiseco 3208PS piston?
It is the standard-size 79.00mm piston.

What Yamaha OEM numbers does 3208PS replace?
It cross references 6D8-W1164-00-00, 6D8-W1164-30-00, 6D8-W1164-31-00 and 67F-11640-00-00.

Does this fit Yamaha F75?
Yes. Verified applications include the 2005 F75TLRD and later F75LA / F75TLR applications listed above.

Does it fit Yamaha F90?
Yes. The supplied fitment includes 2005 F90TJR / TLR / TXR engines and numerous later F90JA, LA, TJR, TLR, TXR and XA applications.

Does this fit Yamaha F80?
Yes. Verified F80 applications are primarily within the 1999-2003 engine families listed above.

Does it fit Yamaha F100?
Yes. Verified F100 TLR and TXR applications span 1999-2003.

Do you have an oversize piston?
Yes. The Wiseco 3208P2 .020 oversize / 79.5mm piston is linked above.

Do you have replacement cylinder sleeves?
Yes. Advanced Sleeve 1185SA and 1185SC options are linked above for compatible rebuild applications.

What main bearing set goes with this engine?
The Pro Marine 4CYLSSMAIN main bearing set is linked above for compatible Yamaha four-cylinder engines.

What connecting rod bearings go with this piston?
For compatible F75, F80, F90 and F100 applications, use the Pro Marine F75SSROD connecting rod bearing set linked above.

Is a complete gasket kit available?
Yes. The Pro Marine 6803 powerhead gasket kit is linked above.

Searchable Terms

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Part Number & Size

OEM Piston Family

The corresponding standard-size piston family cross references the following Yamaha OEM piston assemblies:

Yamaha Outboard Fitment

Standard 79mm Wiseco Piston Option

If the cylinder remains within standard-size service limits, use the standard 79.00mm Wiseco 3208PS piston instead.

Wiseco Standard Piston Kit - 79.00mm - 3208PS

Standard-size piston for compatible Yamaha F75, F80, F90 and F100 four-stroke engines where the cylinder remains suitable for a 79.00mm standard bore.

OEM References: 6D8-W1164-00-00, 6D8-W1164-30-00, 6D8-W1164-31-00, 67F-11640-00-00

View Standard 79mm Wiseco Piston

Replacement Cylinder Sleeves

If cylinder damage is too severe for a normal .020 overbore repair, replacement sleeves may be required during the rebuild.

Advanced Sleeve 1185SC - Straight 4-Stroke Sleeve

Replacement cylinder sleeve option for compatible Yamaha four-stroke powerhead rebuilds.

Verify sleeve outside diameter, length and finished-bore requirements before machining or installation.

View 1185SC Cylinder Sleeve

Advanced Sleeve 1185SA - Straight 4-Stroke Sleeve

Alternate replacement cylinder sleeve option for compatible Yamaha four-stroke engine rebuilding.

Compare sleeve dimensions to the block and machining requirements before ordering.

View 1185SA Cylinder Sleeve

Crankshaft & Connecting Rod Bearings

A piston replacement is often part of a larger powerhead rebuild. Pro Marine stocks matching one-size crankshaft main and connecting rod bearing sets for compatible Yamaha four-cylinder engines.

Pro Marine Yamaha Main Bearing Set - 4CYLSSMAIN

Complete one-size crankshaft main bearing set for compatible Yamaha four-cylinder four-stroke applications.

First OEM Reference: 6D8-11416-00-00

Eliminates Yamaha bearing color-code selection and Plastigauge sizing.

View Main Bearing Set

Pro Marine F75-F100 Rod Bearing Set - F75SSROD

Matching one-size connecting rod bearing set for compatible Yamaha F75, F80, F90 and F100 four-stroke engines.

Designed to simplify bearing selection by eliminating the factory color-code sizing system.

View Connecting Rod Bearing Set

Complete Powerhead Gasket Kit

Pro Marine Powerhead Gasket Kit - 6803

Complete powerhead gasket kit for compatible Yamaha F75-F115 engine rebuilds.

Recommended when the engine is being disassembled for piston replacement, cylinder machining, bearing service or a complete rebuild.

OEM Families: 6D8-W0001, 67F-W0001 and 68V-W0001

View Powerhead Gasket Kit

Shop Yamaha Engine Rebuild Parts by Model

Use Pro Marine's Yamaha engine rebuild sections to find related pistons, bearings, valves, gaskets, sleeves and other internal engine components.

Standard vs. .020 Oversize Piston

Parts to Inspect During an Oversize Piston Rebuild

• Cylinder bore diameter and taper
• Cylinder roundness
• Finished piston-to-wall clearance
• Piston rings and ring end gap
• Connecting rod bearings
• Connecting rod bolts
• Crankshaft journals
• Crankshaft main bearings
• Cylinder head and valves
• Powerhead gaskets and seals
• Oil passages and lubrication system

Key Features and Benefits

• Wiseco oversize Yamaha piston kit
• Wiseco item 3208P2
• .020 oversize
• 79.5mm piston diameter
• Fits select Yamaha F75 engines
• Fits select Yamaha F80 engines
• Fits select Yamaha F90 engines
• Fits select Yamaha F100 engines
• Standard 79mm Wiseco piston linked above
• Replacement cylinder sleeves linked above
• Matching crankshaft main bearings linked above
• Matching connecting rod bearings linked above
• Complete powerhead gasket kit linked above

FAQ

What size is Wiseco 3208P2?
It is a 79.5mm / .020 oversize piston.

Is this the standard-size piston?
No. The standard-size piston is the Wiseco 3208PS 79.00mm piston linked above.

Does 3208P2 fit Yamaha F75?
Yes, for compatible F75 applications where the cylinder is properly machined for the 79.5mm oversize piston.

Does it fit Yamaha F90?
Yes. The supplied engine fitment includes numerous F90 applications, but the cylinder must be machined for the oversize piston.

Does it fit Yamaha F80 and F100?
Yes. Verified engine families include select F80 and F100 applications primarily from 1999 through 2003.

Can I put this piston in a standard bore?
No. This piston is .020 oversize and requires the cylinder to be correctly bored and finished for a 79.5mm piston.

Do you stock the standard-size piston?
Yes. The Wiseco 3208PS 79.00mm standard piston is linked above.

Do you have cylinder sleeves?
Yes. Advanced Sleeve 1185SA and 1185SC options are linked above.

What main bearings are available for this engine?
The Pro Marine 4CYLSSMAIN crankshaft main bearing set is linked above for compatible applications.

What rod bearings are available?
The Pro Marine F75SSROD connecting rod bearing set is linked above.

Is a complete gasket kit available?
Yes. The Pro Marine 6803 Powerhead Gasket Kit is linked above for compatible engine rebuilds.

Searchable Terms

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OEM Number

Yamaha Outboard Fitment

Aftermarket Pro Marine Option

Pro Marine Intake Valve Stem Seal - A3721

Pro Marine aftermarket replacement for the compatible Yamaha OEM intake valve stem seal application.

Brand: Pro Marine
Type: Intake Valve Stem Seal

View Pro Marine Intake Valve Seal

Related Cylinder Head Rebuild Parts

Pro Marine Valve Spring - 67F-12114P

Replacement valve spring for compatible Yamaha F75-F115 four-stroke cylinder heads.

OEM: 67F-12114-00-00

View Valve Spring

Yamaha OEM Exhaust Valve Stem Seal

Genuine Yamaha OEM exhaust-side valve stem seal for compatible four-stroke cylinder heads.

Brand: Yamaha OEM

View OEM Exhaust Valve Seal

Pro Marine Exhaust Valve Stem Seal - A3722

Aftermarket exhaust valve stem seal for compatible Yamaha four-stroke engines.

Brand: Pro Marine

View Pro Marine Exhaust Seal

Pro Marine Intake Valve - 68V-12111P

Length: 96.9mm
Head Diameter: 29mm

Replacement intake valve for compatible Yamaha four-stroke cylinder-head rebuilds.

View Intake Valve

Pro Marine Exhaust Valve - 68V-12121P

Length: 99.3mm
Head Diameter: 23.9mm

Replacement exhaust valve for compatible Yamaha four-stroke cylinder-head rebuilds.

View Exhaust Valve

Valve Train Service Components

What This Part is Used For

The intake valve stem seal fits around the intake valve stem and helps control the amount of engine oil that passes between the valve stem and valve guide.

The seal must allow enough lubrication for the valve stem and guide while limiting excessive oil from entering the intake port and combustion chamber.

Symptoms of a Worn Valve Stem Seal

Valve stem seals can harden, wear or become damaged with age and heat. Excessive oil passing the seal can contribute to oil consumption and combustion-chamber deposits.

Valve seals should be inspected whenever the cylinder head is disassembled or the valves are removed.

When to Replace Valve Stem Seals

• During a complete cylinder-head rebuild
• When replacing intake or exhaust valves
• When valve guides are serviced
• If seals are hardened, cracked or damaged
• When excessive oil consumption is traced to the cylinder head
• After overheating or severe cylinder-head damage
• During a complete powerhead overhaul

Inspect These Parts During Valve Seal Replacement

• Intake valve stems
• Exhaust valve stems
• Valve guides
• Valve seats
• Valve springs
• Valve spring retainers
• Valve keepers
• Camshaft lobes
• Camshaft journals
• Cylinder-head sealing surface

Shop Yamaha Engine Rebuild Parts by Model

Pro Marine stocks pistons, piston rings, bearings, cylinder sleeves, valves, valve stem seals, gaskets and other internal Yamaha four-stroke engine components.

Shop Yamaha Engine Rebuild Parts by Model

Key Features

• Genuine Yamaha OEM intake valve stem seal
• OEM number K0A-A3721-00-00
• Fits select Yamaha F75 applications
• Fits select Yamaha F80 applications
• Fits select Yamaha F90 applications
• Fits select Yamaha F100 applications
• Fits extensive Yamaha F115 applications
• Fits Yamaha LF115 applications
• Pro Marine A3721 aftermarket option linked above
• Matching exhaust valve seals linked above
• Valve spring linked above
• Replacement intake and exhaust valves linked above

FAQ

What is the Yamaha OEM number for this intake valve seal?
The OEM number is K0A-A3721-00-00.

Is this a genuine Yamaha part?
Yes. This listing is for the Yamaha OEM intake valve stem seal.

Do you have an aftermarket version?
Yes. The Pro Marine A3721 aftermarket intake valve stem seal is linked above.

Does this fit Yamaha F115?
Yes. The supplied fitment includes extensive F115 applications from early engines through later model variants.

Does this seal fit Yamaha F75, F80, F90 and F100?
Yes. Select applications from each of those engine families are included in the verified fitment above.

Does this fit LF115 engines?
Yes. Multiple LF115 applications are included in the supplied fitment.

Do you stock the exhaust valve seal?
Yes. Both the Yamaha OEM K0A-A3722 and Pro Marine A3722 exhaust valve seals are linked above.

Do you have the valves for these engines?
Yes. The 68V-12111P intake valve and 68V-12121P exhaust valve are linked above.

Do you stock the valve spring?
Yes. The Pro Marine 67F-12114P valve spring is linked above.

Searchable Part Numbers & Terms

K0A-A3721-00-00, K0AA37210000, K0A-A3721, Yamaha intake valve seal, Yamaha intake valve stem seal, Yamaha OEM valve seal, Yamaha F75 valve seal, Yamaha F80 valve seal, Yamaha F90 valve seal, Yamaha F100 valve seal, Yamaha F115 valve seal, Yamaha LF115 valve seal, F115 intake valve seal, F115 valve stem seal, A3721, Pro Marine A3721, K0A-A3722, A3722, Yamaha exhaust valve seal, 67F-12114P, 67F-12114-00-00, Yamaha valve spring, 68V-12111P, Yamaha intake valve, 68V-12121P, Yamaha exhaust valve, Yamaha F115 cylinder head rebuild, Yamaha valve train parts, Yamaha engine rebuild parts

OEM & Cross Reference Numbers

Yamaha Outboard Fitment

Genuine Yamaha OEM Option

Yamaha OEM Exhaust Valve Stem Seal - K0A-A3722-00-00

Prefer genuine Yamaha? Pro Marine also stocks the OEM exhaust valve stem seal for the same compatible applications.

Brand: Yamaha OEM
OEM Number: K0A-A3722-00-00

View Yamaha OEM Exhaust Valve Seal

Related Cylinder Head Rebuild Parts

Pro Marine Valve Spring - 67F-12114P

Replacement valve spring for compatible Yamaha F75-F115 four-stroke cylinder heads.

OEM: 67F-12114-00-00
Mercury Cross Reference: 804131

View Valve Spring

Yamaha OEM Intake Valve Stem Seal

Matching genuine Yamaha intake-side valve stem seal for compatible four-stroke cylinder heads.

OEM: K0A-A3721-00-00

View OEM Intake Valve Seal

Pro Marine Intake Valve Stem Seal - A3721

Pro Marine aftermarket intake valve stem seal for compatible Yamaha four-stroke applications.

Replaces: K0A-A3721-00-00

View Pro Marine Intake Seal

Pro Marine Intake Valve - 68V-12111P

Length: 96.9mm
Head Diameter: 29mm

Replacement intake valve for compatible Yamaha four-stroke cylinder-head rebuilds.

View Intake Valve

Pro Marine Exhaust Valve - 68V-12121P

Length: 99.3mm
Head Diameter: 23.9mm

Replacement exhaust valve for compatible Yamaha four-stroke cylinder-head rebuilds.

View Exhaust Valve

Valve Train Service Components

What This Part is Used For

The exhaust valve stem seal fits around the exhaust valve stem and helps control oil movement between the valve stem and valve guide.

The seal allows the valve stem and guide to receive the lubrication they require while limiting excess oil from traveling through the guide and entering the exhaust port or combustion chamber.

Because exhaust-side components operate under high temperatures, the condition of the valve stem seal is especially important during a cylinder-head rebuild.

Why Exhaust Valve Stem Seals Matter

Valve stem seals are continually exposed to engine heat and repeated operating cycles. Over time, a seal may harden, crack, wear or lose its ability to properly control oil.

A deteriorated valve seal can contribute to excessive oil entering the combustion chamber, oil consumption and carbon deposits.

When to Replace Exhaust Valve Stem Seals

• During a complete cylinder-head rebuild
• When replacing an exhaust valve
• When valve guides are being serviced
• If the existing seal is hardened, cracked or damaged
• When excessive oil usage is traced to the cylinder head
• After overheating or valve-train damage
• During a complete powerhead overhaul

Inspect These Components at the Same Time

• Exhaust valve
• Intake valve
• Intake valve stem seals
• Valve guides
• Valve seats
• Valve springs
• Valve spring retainers
• Valve keepers
• Camshaft lobes and journals
• Cylinder-head sealing surface

Shop Yamaha Engine Rebuild Parts by Model

Pro Marine stocks pistons, piston rings, crankshaft main bearings, connecting rod bearings, cylinder sleeves, valves, valve stem seals, gaskets and other internal Yamaha four-stroke engine components.

Key Features

• Pro Marine aftermarket exhaust valve stem seal
• Pro Marine part number A3722
• Replaces Yamaha K0A-A3722-00-00
• Fits select Yamaha F75 applications
• Fits select Yamaha F80 applications
• Fits select Yamaha F90 applications
• Fits select Yamaha F100 applications
• Fits extensive Yamaha F115 applications
• Fits Yamaha LF115 applications
• Genuine Yamaha OEM exhaust seal available as an alternate
• OEM and Pro Marine intake valve stem seals linked above
• Valve spring linked above
• Pro Marine intake and exhaust valves linked above

FAQ

What Yamaha OEM number does Pro Marine A3722 replace?
A3722 replaces Yamaha K0A-A3722-00-00.

Is A3722 a Yamaha OEM part?
No. A3722 is the Pro Marine aftermarket version.

Can I buy the genuine Yamaha version?
Yes. The Yamaha OEM K0A-A3722-00-00 exhaust valve stem seal is linked above.

Does A3722 fit Yamaha F115?
Yes. The supplied fitment includes extensive Yamaha F115 applications from early engines through later model variants.

Does this fit Yamaha F75, F80, F90 and F100?
Yes. Select models from each of those Yamaha four-stroke families are included in the fitment above.

Does A3722 fit Yamaha LF115?
Yes. Multiple LF115 applications are included.

Do you stock the intake valve stem seal?
Yes. Pro Marine stocks both the A3721 aftermarket intake seal and Yamaha OEM K0A-A3721-00-00.

Do you stock the exhaust valve?
Yes. The Pro Marine 68V-12121P exhaust valve is linked above.

Do you stock the intake valve?
Yes. The Pro Marine 68V-12111P intake valve is linked above.

Do you stock the valve spring?
Yes. The Pro Marine 67F-12114P valve spring is linked above.

Searchable Part Numbers & Terms

A3722, Pro Marine A3722, K0A-A3722-00-00, K0AA37220000, K0A-A3722, Yamaha exhaust valve seal, Yamaha exhaust valve stem seal, aftermarket Yamaha valve seal, Yamaha F75 valve seal, Yamaha F80 valve seal, Yamaha F90 valve seal, Yamaha F100 valve seal, Yamaha F115 valve seal, Yamaha LF115 valve seal, F115 exhaust valve seal, F115 valve stem seal, K0A-A3721-00-00, K0A-A3721, A3721, Yamaha intake valve seal, 67F-12114P, 67F-12114-00-00, Yamaha valve spring, 68V-12111P, Yamaha intake valve, 68V-12121P, Yamaha exhaust valve, Yamaha F115 cylinder head rebuild, Yamaha valve train parts, Yamaha engine rebuild parts

OEM Numbers & Cross References

Yamaha Outboard Fitment

Mercury Outboard Fitment

Mercury fitment below is based on the Mercury catalog applications for OEM part number 804131.

Related Cylinder Head & Valve Train Parts

When servicing the valve springs or rebuilding the cylinder head, inspect the intake and exhaust valves, valve stem seals, guides, seats and related valve-train components.

Intake Valve Stem Seals

Yamaha OEM Intake Valve Stem Seal

Genuine Yamaha OEM intake valve stem seal for compatible four-stroke cylinder heads.

Brand: Yamaha OEM

View OEM Intake Valve Seal

Pro Marine Intake Valve Stem Seal - A3721

Pro Marine aftermarket intake valve stem seal for compatible Yamaha four-stroke cylinder heads.

Brand: Pro Marine

View Pro Marine Intake Seal

Exhaust Valve Stem Seals

Yamaha OEM Exhaust Valve Stem Seal

Genuine Yamaha OEM exhaust valve stem seal for compatible Yamaha four-stroke cylinder heads.

Brand: Yamaha OEM

View OEM Exhaust Valve Seal

Pro Marine Exhaust Valve Stem Seal - A3722

Pro Marine aftermarket exhaust valve stem seal for compatible Yamaha four-stroke engines.

Brand: Pro Marine

View Pro Marine Exhaust Seal

Replacement Intake & Exhaust Valves

Pro Marine Intake Valve - 68V-12111P

Valve Length: 96.9mm
Head Diameter: 29mm

Pro Marine replacement intake valve for compatible Yamaha four-stroke cylinder-head rebuilds.

View Intake Valve

Pro Marine Exhaust Valve - 68V-12121P

Valve Length: 99.3mm
Head Diameter: 23.9mm

Pro Marine replacement exhaust valve for compatible Yamaha four-stroke cylinder-head rebuilds.

View Exhaust Valve

Related Valve Train Components

What This Part is Used For

The valve spring provides the closing force for the intake or exhaust valve after the camshaft opens the valve.

Proper valve spring pressure helps the valve follow the camshaft profile, return to the closed position and remain seated when combustion pressure is present.

Weak, damaged or incorrectly installed valve springs can contribute to poor valve control, loss of compression or abnormal valve-train operation.

When to Inspect or Replace Valve Springs

• During a complete cylinder-head rebuild
• After valve or piston contact
• When replacing damaged intake or exhaust valves
• If a spring is visibly damaged, corroded or distorted
• If spring free length or pressure is outside service specifications
• During a major powerhead overhaul

Inspect These Parts During Cylinder Head Service

• Intake valves
• Exhaust valves
• Valve stem seals
• Valve guides
• Valve seats
• Valve springs
• Spring retainers
• Valve keepers
• Camshaft lobes and journals
• Cylinder-head sealing surface

Shop Yamaha Engine Rebuild Parts by Model

Pro Marine stocks pistons, rings, main bearings, rod bearings, cylinder sleeves, valves, valve seals, gaskets and other internal Yamaha four-stroke engine components.

Shop Yamaha Engine Rebuild Parts by Model

Key Features

• Pro Marine aftermarket valve spring
• Part number 67F-12114P
• Replaces Yamaha 67F-12114-00-00
• Cross references Mercury 804131
• Fits select Yamaha F75 applications
• Fits select Yamaha F80 applications
• Fits select Yamaha F90 applications
• Fits select Yamaha F100 applications
• Fits extensive Yamaha F115 and LF115 applications
• Fits select Mercury 75HP and 90HP carbureted engines
• Fits select Mercury 75-115HP EFI engines
• OEM Yamaha valve seals available
• Pro Marine aftermarket valve seals available
• Pro Marine intake and exhaust valves available

FAQ

What Yamaha number does 67F-12114P replace?
It replaces Yamaha OEM 67F-12114-00-00.

What Mercury number does this valve spring replace?
It cross references Mercury 804131.

Does 67F-12114P fit Yamaha F115?
Yes. The supplied fitment includes numerous Yamaha F115 and LF115 applications from early engines through later model families.

Does this fit Yamaha F75, F80, F90 or F100?
Yes. Select applications for each of those horsepower families are included in the verified fitment above.

Does this valve spring fit Mercury 115 EFI?
Yes. Mercury catalog fitment includes 0T178500 thru 0T800999, 0T801000 thru 1B226999, and 1B227000 thru 1B366822.

What other Mercury engines use this spring?
Catalog fitment also includes select Mercury 75HP and 90HP carbureted engines and 75HP, 80HP, 90HP and 100HP EFI applications.

Do you stock intake and exhaust valves?
Yes. Pro Marine 68V-12111P intake and 68V-12121P exhaust valves are linked above.

Do you stock Yamaha OEM valve stem seals?
Yes. Yamaha OEM intake and exhaust valve stem seals are linked above.

Are aftermarket valve stem seals available?
Yes. Pro Marine A3721 intake and A3722 exhaust valve stem seals are linked above.

Searchable Part Numbers & Terms

67F-12114P, 67F-12114-00-00, 67F121140000, 804131, Mercury 804131, Yamaha valve spring, Yamaha F75 valve spring, Yamaha F80 valve spring, Yamaha F90 valve spring, Yamaha F100 valve spring, Yamaha F115 valve spring, Yamaha LF115 valve spring, Mercury 75 valve spring, Mercury 80 valve spring, Mercury 90 valve spring, Mercury 100 valve spring, Mercury 115 valve spring, Mercury 115 EFI valve spring, 68V-12111P, Yamaha intake valve, 68V-12121P, Yamaha exhaust valve, K0A-A3721, A3721, Yamaha intake valve stem seal, K0A-A3722, A3722, Yamaha exhaust valve stem seal, Yamaha cylinder head rebuild, Yamaha F115 cylinder head parts, Yamaha engine rebuild parts

OEM & Cross Reference Numbers

Yamaha Outboard Fitment

Verified Yamaha applications span multiple generations of 75HP through 115HP four-stroke outboards, including early F80/F100 engines, later F75/F90 applications and extensive F115 / LF115 coverage.

Representative Yamaha Model-Year Coverage

Mercury Outboard Fitment

Mercury catalog information supplied for this gasket confirms both carbureted and EFI four-stroke applications.

Head Gasket & Powerhead Rebuild Options

Pro Marine stocks both an aftermarket version of this individual cylinder head gasket and a complete powerhead gasket kit for compatible engines.

Pro Marine Cylinder Head Gasket - 67111

Pro Marine aftermarket replacement for compatible Yamaha and Mercury applications using the 67F-11181 / 804115 gasket family.

A cost-effective alternative when an OEM Yamaha gasket is not required.

View Pro Marine Head Gasket

Pro Marine Powerhead Gasket Kit - 6803

Rebuilding the complete engine? The 6803 powerhead gasket kit contains the major gaskets and sealing components used during compatible powerhead disassembly and reassembly.

This is usually the better choice for a complete rebuild rather than purchasing only the individual cylinder head gasket.

View Complete Powerhead Gasket Kit

What the Cylinder Head Gasket Does

The cylinder head gasket seals the mating surface between the cylinder head and engine block. It must maintain a seal around the combustion chambers while also separating oil and cooling passages where applicable.

A properly sealing head gasket is critical for maintaining cylinder compression and preventing combustion pressure, cooling water or engine oil from leaking between passages.

Common Signs of a Failed Head Gasket

• Low compression in one or more cylinders
• Overheating
• Cooling-water intrusion into the cylinder
• Combustion gases entering the cooling system
• Visible gasket failure after cylinder-head removal
• Corrosion or erosion around the combustion sealing surface
• Uneven or damaged cylinder-head sealing surface

During Cylinder Head Service

When a cylinder head is removed, inspect both the cylinder head and block sealing surfaces before installing the new gasket. Check for corrosion, erosion, warpage and other damage that could prevent the new gasket from sealing correctly.

Follow the applicable Yamaha or Mercury service manual for bolt tightening sequence, torque specifications and any required inspection or machining procedures.

Individual Head Gasket or Complete Gasket Kit?

Key Features and Benefits

• Genuine Yamaha OEM cylinder head gasket
• Fits select Yamaha F75 four-stroke engines
• Fits select Yamaha F80 four-stroke engines
• Fits select Yamaha F90 four-stroke engines
• Fits select Yamaha F100 four-stroke engines
• Fits extensive Yamaha F115 and LF115 applications
• Fits select Mercury 75HP carbureted engines
• Fits select Mercury 90HP carbureted engines
• Fits select Mercury 75HP, 80HP, 90HP and 100HP EFI engines
• Fits select Mercury 115HP EFI applications
• Replaces Yamaha 67F-11181-00-00 through 67F-11181-03-00
• Cross references Sierra 18-99094
• Cross references Mercury 804115 / 8041151
• Pro Marine aftermarket gasket linked above
• Complete Pro Marine powerhead gasket kit linked above

FAQ

Is 67111-1 a genuine Yamaha head gasket?
Yes. This listing is for the genuine Yamaha OEM version. The Pro Marine aftermarket 67111 gasket is linked above.

What Yamaha OEM numbers does this gasket replace?
It cross references 67F-11181-00-00, 67F-11181-01-00, 67F-11181-02-00 and 67F-11181-03-00.

Does this fit Yamaha F75?
Yes. Verified applications include select F75TLR and F75LA models.

Does this fit Yamaha F90?
Yes. The supplied fitment includes numerous F90 TJR, TLR, TXR, JA, LA and XA applications.

Does this fit Yamaha F100?
Yes. Verified applications include several F100TLR and F100TXR engines from 1999 through 2003.

Does this fit Yamaha F115?
Yes. The fitment includes extensive F115 TJR, TLR, TXR, JA, LA and XA applications, plus LF115 counter-rotation engines.

Does this fit Mercury 75HP and 90HP carbureted engines?
Yes. Verified Mercury fitment includes both 75HP and 90HP carbureted applications from 0G960500 thru 1B226999.

Does this fit Mercury EFI engines?
Yes. The supplied Mercury data includes select 75HP, 80HP, 90HP, 100HP and 115HP EFI applications.

Does it fit Mercury 115HP EFI?
Yes. Mercury catalog fitment includes 115HP EFI applications in 0T178500 thru 0T800999, 0T801000 thru 1B226999, and later 1B-series applications through 1B366822.

Is there an aftermarket version available?
Yes. The Pro Marine 67111 cylinder head gasket is linked above.

Do you sell a complete gasket kit?
Yes. The Pro Marine 6803 Powerhead Gasket Kit is linked above for compatible applications where a complete engine rebuild or major powerhead repair is being performed.

Should I reuse the old cylinder head gasket?
A cylinder head gasket should be replaced when the cylinder head has been removed. Follow the applicable Yamaha or Mercury service procedure during reassembly.

Searchable Terms

67111-1, Yamaha 67111-1, 67F-11181-00-00, 67F-11181-01-00, 67F-11181-02-00, 67F-11181-03-00, Yamaha 67F-11181, 18-99094, Sierra 18-99094, 804115, 8041151, Yamaha cylinder head gasket, Yamaha F75 head gasket, Yamaha F80 head gasket, Yamaha F90 head gasket, Yamaha F100 head gasket, Yamaha F115 head gasket, Yamaha LF115 head gasket, Mercury 75 carb head gasket, Mercury 90 carb head gasket, Mercury 75 EFI head gasket, Mercury 80 EFI head gasket, Mercury 90 EFI head gasket, Mercury 100 EFI head gasket, Mercury 115 EFI head gasket, Mercury 804115 head gasket, F115TLR head gasket, F115TXR head gasket, F115TJR head gasket, F115JA head gasket, F115LA head gasket, F115XA head gasket, LF115TXR head gasket, 67111, Pro Marine 67111, 6803, Yamaha powerhead gasket kit

OEM & Cross Reference Numbers

Yamaha Outboard Fitment

Mercury Outboard Fitment

OEM & Complete Gasket Kit Options

Pro Marine also stocks the genuine Yamaha OEM version of this head gasket, as well as a complete powerhead gasket kit for compatible engines.

Genuine Yamaha OEM Cylinder Head Gasket - 67111-1

Genuine Yamaha factory version for compatible applications using the 67F-11181 cylinder head gasket family.

Choose this option when an OEM Yamaha gasket is preferred for the repair.

View Yamaha OEM Head Gasket

Pro Marine Powerhead Gasket Kit - 6803

Performing a complete powerhead rebuild? The 6803 gasket kit is the better starting point when multiple engine gaskets and sealing components will be disturbed.

View Complete Powerhead Gasket Kit

What This Cylinder Head Gasket Does

The cylinder head gasket seals the joint between the cylinder head and engine block. It helps contain combustion pressure while sealing the cooling and lubrication passages that pass between the two components.

Proper sealing is critical for maintaining compression and preventing cooling water, combustion gases or engine oil from moving between passages where they do not belong.

Common Signs of Head Gasket Failure

• Low or uneven cylinder compression
• Cooling-water intrusion into one or more cylinders
• Overheating
• Combustion pressure entering the cooling system
• Visible erosion or failure of the old gasket
• Corrosion around the combustion sealing area
• Evidence of leakage between adjacent passages

What to Inspect During Cylinder Head Service

Whenever the cylinder head is removed, inspect the head and block sealing surfaces for corrosion, erosion, pitting, distortion and other damage that could prevent the replacement gasket from sealing correctly.

The applicable Yamaha or Mercury service manual should be followed for surface inspection, tightening sequence, fastener requirements and torque specifications.

Individual Head Gasket vs. Complete Powerhead Gasket Kit

Why Choose the Pro Marine 67111?

• Pro Marine aftermarket cylinder head gasket
• Cost-effective alternative to the Yamaha OEM gasket
• Replaces Yamaha 67F-11181-00-00
• Replaces Yamaha 67F-11181-01-00
• Replaces Yamaha 67F-11181-02-00
• Replaces Yamaha 67F-11181-03-00
• Cross references Sierra 18-99094
• Cross references Mercury 804115 / 8041151
• Fits select Yamaha F75 engines
• Fits select Yamaha F80 engines
• Fits select Yamaha F90 engines
• Fits select Yamaha F100 engines
• Fits extensive Yamaha F115 and LF115 applications
• Fits select Mercury 75HP and 90HP carbureted engines
• Fits select Mercury 75-115HP EFI engines
• Yamaha OEM gasket option linked above
• Complete powerhead gasket kit linked above

FAQ

Is 67111 an OEM Yamaha gasket?
No. This listing is for the Pro Marine aftermarket version. The genuine Yamaha OEM 67111-1 head gasket is linked above.

What Yamaha numbers does Pro Marine 67111 replace?
It cross references 67F-11181-00-00, 67F-11181-01-00, 67F-11181-02-00 and 67F-11181-03-00.

Does 67111 fit Yamaha F75?
Yes. Verified applications include select F75TLR and F75LA models.

Does it fit Yamaha F90?
Yes. The supplied fitment includes numerous F90 TJR, TLR, TXR, JA, LA and XA applications.

Does it fit Yamaha F100?
Yes. Verified applications include several F100TLR and F100TXR models.

Does this gasket fit Yamaha F115?
Yes. Extensive F115 TJR, TLR, TXR, JA, LA and XA applications are included, along with LF115 counter-rotation models.

Does this fit Mercury 75HP and 90HP carbureted engines?
Yes. Verified Mercury applications include 75HP and 90HP carb engines across serial ranges from 0G960500 thru 1B226999.

Does it fit Mercury EFI outboards?
Yes. The supplied fitment includes select 75HP, 80HP, 90HP, 100HP and 115HP EFI engines.

Does it fit Mercury 115 EFI?
Yes. The supplied Mercury catalog information includes several 115HP EFI serial ranges through 1B366822.

Is the OEM Yamaha version available?
Yes. The genuine Yamaha 67111-1 cylinder head gasket is linked above.

Do you sell a complete powerhead gasket kit?
Yes. The Pro Marine 6803 powerhead gasket kit is linked above for compatible applications.

Searchable Terms

67111, Pro Marine 67111, 67F-11181-00-00, 67F-11181-01-00, 67F-11181-02-00, 67F-11181-03-00, Yamaha 67F-11181, 18-99094, Sierra 18-99094, 804115, 8041151, Yamaha cylinder head gasket, Yamaha F75 head gasket, Yamaha F80 head gasket, Yamaha F90 head gasket, Yamaha F100 head gasket, Yamaha F115 head gasket, Yamaha LF115 head gasket, Mercury 75 carb head gasket, Mercury 90 carb head gasket, Mercury 75 EFI head gasket, Mercury 80 EFI head gasket, Mercury 90 EFI head gasket, Mercury 100 EFI head gasket, Mercury 115 EFI head gasket, F115TLR head gasket, F115TXR head gasket, F115TJR head gasket, F115JA head gasket, F115LA head gasket, F115XA head gasket, LF115TXR head gasket, 67111-1, Yamaha OEM head gasket, 6803, Yamaha powerhead gasket kit, Mercury powerhead gasket kit

Piston Size & Application

OEM & Cross Reference Piston Family

Yamaha Outboard Fitment

Mercury 115HP EFI Fitment

Other Piston Options

Vertex Standard Piston - 24228STD

Size: 79.00mm Standard

Standard-size Vertex piston for cylinders that remain within standard bore specifications.

First OEM: 68V-W1164-02-00

View Vertex Standard Piston

Vertex .020 Oversize Piston - 24228050

Size: .020 / .50mm Oversize

Larger oversize Vertex piston option where cylinder condition requires machining beyond .010.

View Vertex .020 Piston

Wiseco Standard Piston - 3207PS

Size: 79.00mm Standard

Alternate Wiseco standard-size piston for compatible Yamaha F115 and Mercury 115 EFI applications.

View Wiseco Standard Piston

Wiseco .020 Oversize Piston - 3207P2

Size: 79.5mm / .020 Oversize

Wiseco .020 oversize alternative for correctly machined cylinders.

View Wiseco .020 Piston

Yamaha OEM Piston Ring Options

Yamaha OEM Standard Ring Kit - 11605

Size: Standard 79mm

First OEM: 6D8-11603-00-00

View Standard OEM Rings

Yamaha OEM .25mm Oversize Ring Kit - 11606

Size: .25mm / approximately .010 Oversize

First OEM: 6D8-11604-00-00

This is the OEM Yamaha oversize ring option to review for the corresponding .25mm / .010 oversize piston configuration.

View .25mm OEM Rings

Replacement Cylinder Sleeves

If cylinder damage cannot be corrected with an oversize bore, replacement cylinder sleeves may be required.

Advanced Sleeve 1185SC

Straight 4-stroke replacement sleeve for compatible powerhead rebuilds.

Verify sleeve dimensions and block machining requirements before installation.

View 1185SC Sleeve

Advanced Sleeve 1185SA

Alternate straight 4-stroke cylinder sleeve option for compatible Yamaha / Mercury engine rebuilding.

Compare sleeve dimensions to the block before machining.

View 1185SA Sleeve

Main & Connecting Rod Bearings

Pro Marine Main Bearing Set - 4CYLSSMAIN

Complete one-size crankshaft main bearing set for compatible Yamaha four-cylinder engines.

First OEM Reference: 6D8-11416-00-00

Eliminates factory Yamaha bearing color-code selection and Plastigauge sizing.

View Main Bearing Set

Pro Marine F115 Rod Bearing Set - 4CYLSSROD

Complete one-size connecting rod bearing set for compatible Yamaha F115 four-stroke applications.

First OEM Reference: 68V-11656-00-00

Eliminates the factory Yamaha rod-bearing color selection process.

View Rod Bearing Set

Complete Powerhead Gasket Kit

Pro Marine Powerhead Gasket Kit - 6803

Complete gasket kit for compatible Yamaha F75-F115 powerhead rebuilds.

Recommended when the engine is disassembled for piston replacement, cylinder machining, bearing replacement or other major internal repairs.

OEM Families: 6D8-W0001, 67F-W0001 and 68V-W0001

View Powerhead Gasket Kit

Piston Size Guide

Shop Yamaha Engine Rebuild Parts by Model

Find additional pistons, rings, bearings, valves, gaskets, sleeves and internal engine components in the Yamaha Engine Rebuild Parts by Model section.

Shop Yamaha Engine Rebuild Parts by Model

When to Use a .010 Oversize Piston

A .010 oversize piston can be used when cylinder wear or damage requires machining beyond the standard bore but does not require a full .020 overbore.

The cylinder should be measured for diameter, taper and out-of-round before machining. The finished bore and piston-to-wall clearance should follow the piston manufacturer's specifications.

Parts to Inspect During an Engine Rebuild

• Cylinder diameter and bore condition
• Cylinder taper and out-of-round
• Piston-to-wall clearance
• Piston rings and ring end gap
• Connecting rod condition
• Connecting rod bolts
• Connecting rod bearings
• Crankshaft main bearings
• Crankshaft journals
• Cylinder head and valves
• Valve stem seals
• Oil passages and lubrication system
• Powerhead gaskets and seals

Key Features and Benefits

• Vertex oversize piston kit
• Vertex part number 24228025
• .010 / .25mm oversize
• Fits extensive Yamaha F115 and LF115 applications
• Fits select Yamaha F75 and F90 applications
• Fits select Mercury 115HP EFI engines
• Standard Vertex piston linked above
• Vertex .020 piston linked above
• Wiseco standard and .020 piston options linked above
• Matching Yamaha OEM .25mm oversize rings linked above
• Replacement cylinder sleeves linked above
• Main and connecting rod bearings linked above
• Complete powerhead gasket kit linked above

FAQ

What size is Vertex 24228025?
It is a .010 / .25mm oversize piston.

Is this a standard-size piston?
No. The standard Vertex piston is the 24228STD 79.00mm piston linked above.

Can I install this piston in a standard 79mm cylinder?
No. The cylinder must be correctly machined and finished for the .25mm / .010 oversize piston.

Does this fit Yamaha F115?
Yes. The supplied engine fitment includes extensive F115 and LF115 applications.

Does it fit Mercury 115 EFI?
Yes. Supplied Mercury fitment includes 0T178500 thru 0T800999, 0T801000 thru 1B226999, and 1B227000 thru 1B366822.

What rings go with the .010 oversize piston?
The Yamaha OEM 11606 .25mm oversize ring kit is linked above for the corresponding oversize piston configuration.

Do you have a .020 oversize Vertex piston?
Yes. The Vertex 24228050 is the .020 oversize option.

Do you have Wiseco piston options?
Yes. The Wiseco 3207PS standard 79mm and 3207P2 .020 / 79.5mm pistons are linked above.

Are cylinder sleeves available?
Yes. Advanced Sleeve 1185SA and 1185SC options are linked above.

What main bearings are available?
The Pro Marine 4CYLSSMAIN main bearing set is linked above.

What connecting rod bearings are available?
The Pro Marine 4CYLSSROD rod bearing set is linked above.

Is a complete gasket kit available?
Yes. The Pro Marine 6803 Powerhead Gasket Kit is linked above.

Searchable Terms

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OEM & Cross Reference Numbers

Yamaha Outboard Fitment

Yamaha uses this connecting rod bolt across several generations of four-cylinder four-stroke outboards. Verified applications include F75, F90, F115, F130, LF115, LF130, VF90 and VF115 engine families.

Detailed Yamaha F115 Coverage

The supplied application information includes Yamaha F115 fitment from early F115 four-stroke models through later-generation engines.

Mercury 115HP EFI Fitment

Mercury also uses the 880896 connecting rod bolt on select 115HP EFI four-stroke applications. The supplied Mercury catalog information identifies the following serial-number ranges:

Matching Yamaha Connecting Rod Bearing Set

Rebuilding a Yamaha F75-F115 engine? Pro Marine offers a matching one-size connecting rod bearing set that eliminates the traditional Yamaha color-code selection process.

Pro Marine Yamaha F75-F115 Connecting Rod Bearing Set - F75SSROD

Pro Marine one-size connecting rod bearing set for compatible Yamaha four-stroke engines. This bearing system eliminates the need to select individual factory bearing colors.

When rebuilding the connecting rods, inspect the rod bolts and bearings together before reassembly.

View Yamaha Connecting Rod Bearing Set

Yamaha Engine Rebuild & Maintenance Resources

Need more than the connecting rod bolt? Use the Pro Marine Yamaha sections below to find additional internal engine parts, complete maintenance kits and oil-change kits.

What the Connecting Rod Bolt Does

Connecting rod bolts secure the connecting rod cap to the connecting rod. The assembly surrounds the crankshaft journal and must remain securely clamped while the piston and rod repeatedly change direction at engine speed.

Rod bolts are highly stressed engine fasteners. Correct bolt condition, installation procedure and tightening specification are critical during a powerhead rebuild.

Why Inspect or Replace Connecting Rod Bolts During a Rebuild?

Connecting rod bolts are subjected to repeated tensile loading every time the engine operates. During a powerhead rebuild, inspect the bolts and connecting rod assembly carefully for damage, thread problems, corrosion, stretching or other signs that could compromise clamping force.

Follow the applicable Yamaha or Mercury service procedure for the exact engine being assembled. Torque specifications and whether a fastener should be reused can vary by engine family.

Related Parts to Inspect During Connecting Rod Service

• Connecting rod bearings
• Connecting rod journals
• Connecting rod and cap mating surfaces
• Pistons and piston pins
• Piston rings
• Crankshaft main bearings
• Crankshaft journals
• Oil passages and lubrication system

Key Features and Benefits

• Connecting rod bolt for Yamaha and Mercury applications
• Pro Marine item number RB115
• Replaces Yamaha K1C-A3275-00-00
• Replaces Mercury 880896
• Fits select Yamaha F75 four-stroke engines
• Fits select Yamaha F90 four-stroke engines
• Fits extensive Yamaha F115 / LF115 applications
• Fits select Yamaha F130 / LF130 applications
• Fits select Yamaha VF90 V MAX SHO engines
• Fits select Yamaha VF115 V MAX SHO engines
• Fits select Mercury 115HP EFI serial ranges
• Matching Yamaha connecting rod bearing set linked above
• Yamaha rebuild parts section linked above
• Yamaha service and oil-change kit sections linked above

FAQ

What OEM numbers does RB115 replace?
RB115 cross references Yamaha K1C-A3275-00-00 and Mercury 880896.

Does RB115 fit Yamaha F75?
Yes. Verified applications include select F75LA, F75LB, F75TLR and F75XB configurations.

Does this fit Yamaha F90?
Yes. The supplied fitment includes extensive F90JA, F90JB, F90LA, F90LB, F90TJR, F90TLR, F90TXR, F90XA and F90XB applications.

Does it fit Yamaha F115?
Yes. This bolt is used across a broad range of Yamaha F115 engines, including early F115TLR / TXR models and later JA, JB, LA, LB, XA and XB engine families.

Does it fit Yamaha LF115?
Yes. Verified counter-rotation applications include LF115TXR, LF115XA, LF115XB and related variants.

Does this fit Yamaha F130?
Yes. The supplied fitment includes F130LA, F130XA and LF130XA.

Does RB115 fit Yamaha V MAX SHO?
Yes. Verified applications include select VF90 and VF115 V MAX SHO engine families.

Does this fit Mercury 115HP EFI?
Yes. The supplied Mercury fitment includes 0T178500 thru 0T800999, 0T801000 thru 1B226999, and 1B227000 thru 1B366822.

What connecting rod bearings go with this bolt?
For compatible Yamaha F75-F115 applications, the Pro Marine F75SSROD connecting rod bearing set is linked above.

Where can I find the other parts needed to rebuild my Yamaha?
Use the Yamaha Engine Rebuild Parts by Model section to shop internal engine components organized by application.

Do you have complete Yamaha maintenance kits?
Yes. Pro Marine has dedicated Yamaha 4-Stroke Service Kits and Yamaha Oil Change Kits .

Searchable Terms

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OEM & Cross Reference Numbers

Yamaha Outboard Fitment

Mercury 115HP EFI Fitment

Other Piston Options

Wiseco Standard Piston - 3207PS

Size: 79.00mm Standard

Alternate standard-size piston for compatible Yamaha F115 and Mercury 115 EFI applications.

OEM Family: 60C-W1164 / 68V-W1164 / 880895

View Wiseco Standard Piston

Vertex .010 Oversize Piston - 24228025

Size: +.010 / .25mm Oversize

Intermediate oversize option for a cylinder properly machined for the .010 oversize piston.

First OEM Reference: 60C-W1164-10-00

View Vertex .010 Piston

Vertex .020 Oversize Piston - 24228050

Size: +.020 / .50mm Oversize

Vertex .020 oversize option for compatible Yamaha / Mercury rebuilds.

View Vertex .020 Piston

Wiseco .020 Oversize Piston - 3207P2

Size: 79.5mm / .020 Oversize

Alternate Wiseco .020 oversize piston option for a properly machined cylinder.

View Wiseco .020 Piston

Yamaha OEM Piston Ring Options

Yamaha OEM Standard Ring Kit - 11605

Size: Standard 79mm

First OEM: 6D8-11603-00-00

OEM standard-size ring option for compatible 79mm pistons.

View Standard OEM Rings

Yamaha OEM .25mm Oversize Ring Kit - 11606

Size: .25mm / approximately .010 Oversize

First OEM: 6D8-11604-00-00

OEM oversize rings for the corresponding Yamaha .25mm oversize piston.

View .25mm OEM Rings

Replacement Cylinder Sleeves

If cylinder damage is too severe for a normal oversize-bore repair, replacement cylinder sleeves may be used during the rebuild.

Advanced Sleeve 1185SC

Straight 4-stroke cylinder sleeve for compatible powerhead rebuilds.

Verify sleeve dimensions and block machining requirements before installation.

View 1185SC Sleeve

Advanced Sleeve 1185SA

Alternate straight 4-stroke cylinder sleeve option for compatible engines.

Compare sleeve dimensions with the block before machining.

View 1185SA Sleeve

Main & Connecting Rod Bearings

Pro Marine Main Bearing Set - 4CYLSSMAIN

Complete one-size crankshaft main bearing set for compatible Yamaha four-cylinder four-stroke engines.

First OEM Reference: 6D8-11416-00-00

No Yamaha bearing color-code selection or Plastigauge sizing required.

View Main Bearing Set

Pro Marine F115 Rod Bearing Set - 4CYLSSROD

Complete one-size connecting rod bearing set for compatible Yamaha F115 four-stroke applications.

First OEM Reference: 68V-11656-00-00

Eliminates the factory Yamaha color-code bearing selection process.

View Rod Bearing Set

Complete Powerhead Gasket Kit

Pro Marine Powerhead Gasket Kit - 6803

Complete gasket kit for compatible Yamaha F75-F115 powerhead rebuilds.

Recommended when the engine is being completely disassembled for piston, cylinder, crankshaft or bearing work.

OEM Families: 6D8-W0001, 67F-W0001 and 68V-W0001

View Powerhead Gasket Kit

Piston Size Guide

Shop Yamaha Engine Rebuild Parts by Model

Need additional components? Use the Yamaha Engine Rebuild Parts by Model section to shop pistons, rings, bearings, valves, gaskets, sleeves and related internal engine parts.

Shop Yamaha Engine Rebuild Parts by Model

What This Piston is Used For

The piston transfers combustion force through the connecting rod to the crankshaft while the piston rings seal combustion pressure and control oil on the cylinder wall.

During a rebuild, the cylinders should be accurately measured for diameter, taper and out-of-round condition before selecting standard or oversize pistons.

Parts to Inspect During Piston Replacement

• Cylinder bore diameter and condition
• Cylinder taper and out-of-round
• Piston-to-wall clearance
• Piston rings and ring end gap
• Connecting rod bearings
• Connecting rod bolts
• Crankshaft main bearings
• Crankshaft journals
• Cylinder head and valves
• Valve stem seals
• Oil passages and lubrication system
• Powerhead gaskets and seals

Key Features and Benefits

• Vertex standard-size piston kit
• Vertex part number 24228STD
• 79.00mm standard size
• Fits extensive Yamaha F115 and LF115 applications
• Fits select Yamaha F75 and F90 applications
• Fits select Mercury 115HP EFI applications
• Wiseco standard piston alternative linked above
• Vertex .010 and .020 oversize pistons linked above
• Wiseco .020 oversize piston linked above
• Yamaha OEM standard and oversize rings linked above
• Replacement cylinder sleeve options linked above
• Matching main and rod bearings linked above
• Complete powerhead gasket kit linked above

FAQ

What size is Vertex 24228STD?
It is the standard-size 79.00mm piston.

Does Vertex 24228STD fit Yamaha F115?
Yes. The supplied application data includes extensive F115 and LF115 fitment.

Does it fit Mercury 115 EFI?
Yes. Supplied Mercury fitment includes 0T178500 thru 0T800999, 0T801000 thru 1B226999, and 1B227000 thru 1B366822.

Is there another standard-size piston option?
Yes. The Wiseco 3207PS 79mm piston is linked above.

Do you have a .010 oversize piston?
Yes. The Vertex 24228025 is the .010 / .25mm oversize option.

Do you have a .020 oversize piston?
Yes. Pro Marine stocks both the Vertex 24228050 and Wiseco 3207P2 .020 oversize pistons.

What rings are available?
Yamaha OEM 11605 standard rings and 11606 .25mm oversize rings are linked above.

Are replacement cylinder sleeves available?
Yes. Advanced Sleeve 1185SA and 1185SC options are linked above.

What main bearings are available?
The Pro Marine 4CYLSSMAIN main bearing set is linked above.

What rod bearings are available?
The Pro Marine 4CYLSSROD connecting rod bearing set is linked above.

Do you stock a complete powerhead gasket kit?
Yes. The Pro Marine 6803 powerhead gasket kit is linked above.

Searchable Terms

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