Yamaha F90 F115 Mercury 115 EFI Wiseco Standard Piston 3207PS

OEM & Cross Reference Numbers

Yamaha Outboard Fitment

Mercury 115HP EFI Fitment

Piston Options for This Engine Family

Pro Marine stocks both Wiseco and Vertex piston options for compatible Yamaha and Mercury four-stroke rebuilds. Select piston size only after measuring the cylinders and determining the required finished bore.

Wiseco .020 Oversize Piston - 3207P2

Size: 79.5mm / .020 Oversize

Oversize Wiseco option for a cylinder correctly machined for the 79.5mm piston.

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

View Wiseco .020 Piston

Vertex Standard Piston Kit - 24228STD

Size: Standard / 79mm

Alternate standard-size piston option for compatible Yamaha F90-F115 four-stroke engines.

First OEM: 68V-W1164-02-00

View Vertex Standard Piston

Vertex .010 Oversize Piston - 24228025

Size: +.010 / .25mm Oversize

Intermediate oversize piston option when the cylinder can be correctly finished at .010 oversize.

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

View Vertex .010 Piston

Vertex .020 Oversize Piston - 24228050

Size: +.020 Oversize

Vertex oversize piston option for compatible Yamaha F90-F115 four-stroke engine rebuilds.

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

View Vertex .020 Piston

Yamaha OEM Piston Ring Options

Yamaha OEM Standard Piston Ring Kit - 11605

Bore: 79.00mm Standard

First OEM: 6D8-11603-00-00

OEM standard-size ring option for compatible 79mm Yamaha 115HP four-stroke piston applications.

View Standard OEM Rings

Yamaha OEM .25mm Oversize Ring Kit - 11606

Size: .25mm / approximately .010 Oversize

First OEM: 6D8-11604-00-00

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

View .25mm OEM Rings

Replacement Cylinder Sleeves

If a cylinder is too damaged for a normal overbore repair, Pro Marine stocks replacement Advanced Sleeve options for compatible four-stroke engine rebuilding.

Advanced Sleeve 1185SC

Straight replacement 4-stroke cylinder sleeve for compatible powerhead rebuilding applications.

Verify sleeve dimensions and machining requirements before installation.

View 1185SC Sleeve

Advanced Sleeve 1185SA

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

Compare sleeve dimensions with the block before machining.

View 1185SA Sleeve

Crankshaft Main & Connecting Rod Bearings

When rebuilding the complete Yamaha F115 powerhead, inspect the crankshaft main and connecting rod bearings at the same time as the pistons.

Pro Marine Yamaha Main Bearing Set - 4CYLSSMAIN

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

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

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

View Main Bearing Set

Pro Marine Yamaha F115 Rod Bearing Set - 4CYLSSROD

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

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

Designed to eliminate Yamaha bearing color-code selection and Plastigauge sizing.

View Rod Bearing Set

Complete Powerhead Gasket Kit

Pro Marine Powerhead Gasket Kit - 6803

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

A useful option when the engine is being completely disassembled for piston replacement, cylinder machining, bearing service or other major internal repairs.

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

View Powerhead Gasket Kit

Choosing the Correct Piston Size

Shop Yamaha Engine Rebuild Parts by Model

Looking for the rest of the internal engine components? Use the Pro Marine Yamaha Engine Rebuild Parts by Model section to find pistons, rings, bearings, valves, gaskets, sleeves and related powerhead parts.

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 powerhead rebuild, piston size should be selected only after the cylinders have been accurately measured for diameter, taper and out-of-round condition.

Parts to Inspect During a Piston Replacement

• Cylinder bore diameter, taper and roundness
• Piston-to-cylinder-wall clearance
• Piston rings and ring end gap
• Connecting rods and rod bolts
• Connecting rod bearings
• Crankshaft main bearings
• Crankshaft journals
• Cylinder head sealing surface
• Intake and exhaust valves
• Valve stem seals
• Oil passages and lubrication system
• Powerhead gaskets and seals

Key Features and Benefits

• Wiseco aftermarket piston kit
• Wiseco part number 3207PS
• Standard 79.00mm / 3.110" piston size
• Fits extensive Yamaha F115 and LF115 applications
• Fits select Yamaha F75 and F90 applications
• Fits select Mercury 115HP EFI four-stroke engines
• Cross references Yamaha 60C-W1164 piston family
• Cross references Yamaha 68V-W1164 piston family
• Cross references Mercury 880895 piston family
• Wiseco .020 oversize piston available
• Vertex standard, .010 and .020 piston options available
• Yamaha OEM standard and oversize rings linked above
• Replacement cylinder sleeves linked above
• Pro Marine main and rod bearing sets linked above
• Complete powerhead gasket kit linked above

FAQ

What size is Wiseco 3207PS?
The 3207PS is the standard 79.00mm / 3.110" piston.

What Yamaha numbers does 3207PS replace?
It cross references 60C-W1164-00-00, 60C-W1164-01-00, 68V-W1164-00-00, 68V-W1164-01-00 and 68V-W1164-02-00.

What Mercury piston numbers does this cross reference?
Mercury references include 880895A05, 880895A14 and 880895T1.

Does this piston fit Yamaha F115?
Yes. The supplied application data includes extensive F115 TJR, TLR, TXR, JA, LA and XA applications as well as LF115 counter-rotation engines.

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

Is there a .020 oversize Wiseco piston?
Yes. The Wiseco 3207P2 79.5mm / .020 oversize piston is linked above.

Are Vertex pistons available?
Yes. Pro Marine stocks Vertex standard, .010 oversize and .020 oversize piston options for compatible applications.

Do you have OEM Yamaha rings?
Yes. The 11605 standard 79mm and 11606 .25mm oversize Yamaha OEM ring kits are linked above.

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

What main bearing set is available?
The Pro Marine 4CYLSSMAIN crankshaft main bearing set is linked above for compatible Yamaha engines.

What rod bearings are available for the F115?
The Pro Marine 4CYLSSROD 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 powerhead rebuilds.

Searchable Terms

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