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Mercury Outboard Parts
Shop OEM and aftermarket Mercury outboard parts for maintenance, repair, troubleshooting, and complete engine rebuild projects. Browse Mercury marine parts by system, including cooling, fuel delivery, electrical and ignition, internal engine components, lower unit parts, steering, trim, and routine service items.
Pro Marine USA carries Mercury outboard engine parts for a wide range of 2-stroke, FourStroke, EFI, Optimax, Pro XS, SeaPro, and Verado applications. Use your engine horsepower, model, serial number, or OEM part number whenever possible to confirm fitment before ordering.
Shop Mercury Outboard Parts by System
- Complete Powerheads
- Control Cables & Boxes
- Cooling System
- Cowlings & Components
- Electrical System
- Engine Oil
- Engine Rebuild Kits
- Fuel & Carburetion System
- Intake System
- Internal Engine Components
- Lower Unit Components
- Oiling System
- Paints
- Service & Oil Change Kits
- Service Manuals
- Steering Systems
- Throttle Components
- Transom & Midsection
- Trim System
- Wizard Performance Parts
Find the Correct Mercury Outboard Part
Mercury outboard parts can vary by horsepower, engine family, model year, and serial number range. If you are unsure which component fits your engine, use the OEM parts lookup to locate the original Mercury part number from an engine diagram.
Once you have the OEM part number, search Pro Marine to find available genuine Mercury and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Mercury Outboard Engine Families
Pro Marine supports many Mercury outboard applications across a wide horsepower range. Always confirm the engine serial number and model information before ordering parts.
- Portable and Midrange: Mercury 2.5HP through 60HP 2-stroke and FourStroke applications
- FourStroke and EFI: common 75HP through 300HP Mercury EFI and FourStroke platforms
- Pro XS: performance-oriented Mercury Pro XS outboards across multiple engine families
- Optimax: direct-injected 2-stroke Mercury Optimax engines, commonly 75HP through 250HP
- Verado: supercharged and naturally aspirated Mercury Verado applications from 135HP through current high-horsepower platforms
- SeaPro: commercial-duty Mercury SeaPro outboards used in professional and high-hour applications
Common Mercury Outboard Repair Areas
- Overheating: inspect the water pump, impeller, thermostat, poppet valve, cooling passages, and related cooling components.
- Hard starting or rough running: inspect fuel pumps, filters, injectors or carburetors, spark plugs, coils, sensors, and intake components.
- No spark or intermittent ignition: check ignition coils, stators, switch boxes, trigger assemblies, sensors, grounds, and wiring.
- Low compression or power loss: inspect pistons, rings, cylinders, bearings, gaskets, reeds, and internal engine components.
- Lower unit noise or water intrusion: inspect seals, bearings, gears, shafts, bearing carriers, and gear lube condition.
- Trim or steering problems: inspect trim motors, pumps, hydraulic components, steering cylinders, hoses, and related rigging parts.
Why Buy Mercury Outboard Parts from Pro Marine USA?
- OEM Mercury and aftermarket replacement options for many common applications.
- Parts for maintenance, repair, engine rebuilding, lower units, electrical systems, fuel systems, steering, trim, and rigging.
- OEM diagram and part-number lookup tools to help identify the correct part before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large inventory of Mercury service parts and hard-to-find marine engine components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Mercury outboard part?
Use the engine horsepower, model, serial number, and year whenever available. Mercury frequently uses serial-number ranges to identify engine families, so the serial number is often the most reliable way to confirm fitment.
Can I search Mercury parts by OEM part number?
Yes. Enter the Mercury OEM part number into the Pro Marine site search to locate available OEM and aftermarket replacement options. If you do not know the part number, use the OEM parts lookup first.
Do Mercury outboard parts vary by serial number?
Yes. Many Mercury components change by serial-number range even within the same horsepower or model family. Always compare the serial range listed for the part with your engine before ordering.
Do you carry parts for Mercury Optimax and Verado engines?
Yes. Pro Marine carries parts for many Mercury Optimax, Verado, Pro XS, EFI, FourStroke, and SeaPro applications, including maintenance, fuel, electrical, cooling, internal engine, lower unit, steering, and rigging components.
Do you carry both OEM and aftermarket Mercury parts?
Yes. Pro Marine offers genuine Mercury parts along with aftermarket replacement parts for many common Mercury outboard maintenance, repair, and rebuild applications.
What Mercury outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump kits, impellers, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Mercury outboard parts often vary by serial-number range. Confirm your engine serial number and OEM part number whenever possible before ordering.
Genuine Yamaha OEM Oversize Piston Ring Kit
Yamaha F115 & Mercury 115 EFI .25mm / .010 Oversize Piston Ring Kit - 11606
The 11606 Piston Ring Kit is a genuine Yamaha OEM .25mm oversize piston ring set for compatible Yamaha and Mercury four-stroke engine rebuilds.
This ring set is intended for engines that have been machined for the corresponding .25mm / approximately .010 oversize piston. It should not be used with a standard 79mm piston and standard bore.
This ring kit is the matching OEM oversize option for the Vertex 24228025 .010 oversize piston linked below.
These are NOT standard-size piston rings.
Use only with the corresponding oversize piston and a cylinder that has been properly measured and machined for that piston size.
OEM & Cross Reference Numbers
| Brand / Type | Part Number |
|---|---|
| Pro Marine Item | 11606 |
| Yamaha OEM | 6D8-11604-00-00 |
Ring Size
| Specification | Details |
|---|---|
| Ring Type | Oversize Piston Ring Set |
| Oversize | .25mm |
| Approximate Inch Oversize | .010" |
| Standard Bore Reference | 79mm |
| Brand | Yamaha OEM |
Compatible Engine Family
This oversize ring set is intended for the same Yamaha / Mercury engine family as the standard 11605 piston rings, when those engines have been correctly machined for the matching .25mm oversize piston.
| Engine Family | Application |
|---|---|
| Yamaha F115 / LF115 | Compatible applications within the Yamaha F115 and LF115 piston family when using the corresponding .25mm oversize piston. |
| Yamaha F75 / F90 | Select compatible applications within the shared 79mm piston family. |
| Mercury 115 EFI | Compatible Mercury 115 EFI four-stroke applications using the corresponding Yamaha-derived piston family. |
This oversize ring kit should not be selected by horsepower alone.
Verify the engine model or serial number, piston part number, and finished cylinder bore before ordering.
Piston Options for This Engine Family
Vertex .010 Oversize Piston - 24228025
Size: .010 / .25mm Oversize
This is the piston size that matches the 11606 Yamaha OEM oversize ring configuration.
First OEM Reference: 60C-W1164-10-00
View Vertex .010 Oversize Piston
Vertex Standard Piston - 24228STD
Size: 79mm Standard
Use standard-size rings with this piston, not the 11606 oversize set.
View Vertex Standard Piston
Vertex .020 Oversize Piston - 24228050
Size: .020 / .50mm Oversize
This larger piston requires the ring package specified for the .020 oversize piston.
View Vertex .020 Piston
Wiseco Standard Piston - 3207PS
Size: 79mm Standard
Alternate standard-size piston for compatible Yamaha / Mercury four-stroke applications.
View Wiseco Standard Piston
Wiseco .020 Oversize Piston - 3207P2
Size: 79.5mm / .020 Oversize
Use the ring package specified for the Wiseco .020 piston rather than this .25mm Yamaha ring set.
View Wiseco .020 PistonNeed Standard-Size Rings?
Yamaha OEM Standard Piston Ring Kit - 11605
Use the 11605 standard ring kit when the engine is retaining a standard-size 79mm piston and standard finished bore.
OEM Numbers: 6D8-11603-00-00, 6D8-11603-01-00, 6D8-11603-10-00, 6D8-11603-11-00, 67F-11603-00-00, 67F-11603-01-00, 804107T1, 880897T02, 880897T1
Replacement Cylinder Sleeves
Advanced Sleeve 1185SA
OD: 3.270"
Bore: 3.118"
Length: 5.195"
Replacement sleeve option when cylinder damage cannot be corrected with a normal oversize bore.
View 1185SA Sleeve
Advanced Sleeve 1185SC
OD: 3.310"
Bore: 3.118"
Length: 5.195"
Larger-OD replacement sleeve option for compatible Yamaha inline four-cylinder block repairs.
View 1185SC SleeveMain & Connecting Rod Bearings
Pro Marine Main Bearing Set - 4CYLSSMAIN
One-size crankshaft main bearing set for compatible Yamaha inline four-cylinder engines.
First OEM Reference: 6D8-11416-00-00
View Main Bearing Set
Pro Marine F115 Rod Bearing Set - 4CYLSSROD
One-size connecting rod bearing set for compatible Yamaha F115 applications.
First OEM Reference: 68V-11656-00-00
View F115 Rod Bearing SetComplete Powerhead Gasket Kit
Pro Marine Powerhead Gasket Kit - 6803
Complete gasket kit for compatible Yamaha inline four-cylinder powerhead rebuilds.
Recommended when the engine is disassembled for piston, ring, cylinder, bearing or crankshaft service.
Standard vs. Oversize Ring Selection
| Piston / Bore Size | Ring Option |
|---|---|
| Standard 79mm | 11605 Yamaha OEM Standard Ring Kit |
| .25mm / approximately .010 Oversize | 11606 Yamaha OEM Oversize Ring Kit |
| .50mm / .020 Oversize | Use the ring package specified for the exact .020 oversize piston. |
What Piston Rings Do
Piston rings seal combustion pressure between the piston and cylinder wall, control the amount of engine oil remaining on the cylinder surface, and help transfer piston heat into the cylinder.
Ring size must match the piston and finished cylinder bore. Incorrect ring sizing can prevent proper ring end gap and cylinder sealing.
Check Ring End Gap During Assembly
Always check piston ring end gap in the cylinder during assembly. Ring end gap requirements can vary by engine, piston manufacturer, piston size and intended application.
Follow the appropriate Yamaha, Mercury or piston manufacturer's rebuilding specification for the engine being assembled.
Shop Yamaha Engine Rebuild Parts by Model
Find pistons, rings, bearings, valves, cylinder sleeves, gaskets and related powerhead components in Pro Marine's Yamaha Engine Rebuild Parts by Model section.
Shop Yamaha Engine Rebuild Parts by Model
Key Features and Benefits
- Genuine Yamaha OEM piston ring kit
- Pro Marine item 11606
- .25mm / approximately .010 oversize
- For compatible Yamaha / Mercury 79mm piston-family engines
- Designed for use with the corresponding oversize piston
- Vertex .010 piston linked above
- Standard and .020 piston options linked above
- Standard Yamaha OEM ring kit linked above
- Replacement cylinder sleeves linked above
- Main and rod bearing sets linked above
- Complete powerhead gasket kit linked above
FAQ
Is Yamaha 11606 a standard-size ring set?
No. It is a .25mm / approximately .010 oversize
piston ring kit.
What OEM number does 11606 replace?
The primary Yamaha OEM reference is
6D8-11604-00-00.
What piston goes with these rings?
The Vertex 24228025 .010 / .25mm oversize piston
is linked above as the corresponding oversize piston option.
Can these rings be used with a standard piston?
No. Use the 11605 standard Yamaha OEM ring kit with
compatible standard-size 79mm pistons.
Can these rings be used with a .020 piston?
No. Use the ring package specified for the exact .020 oversize piston.
Do you stock standard-size pistons?
Yes. Pro Marine stocks the Vertex 24228STD and
Wiseco 3207PS standard 79mm piston options.
Do you stock .020 pistons?
Yes. The Vertex 24228050 and
Wiseco 3207P2 .020 oversize options are linked above.
Are replacement cylinder sleeves available?
Yes. Advanced Sleeve 1185SA and 1185SC are linked above.
Are main and rod bearings available?
Yes. Pro Marine 4CYLSSMAIN and 4CYLSSROD bearing sets
are linked above for compatible applications.
Is a complete gasket kit available?
Yes. The Pro Marine 6803 Powerhead Gasket Kit
is linked above.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with an order?
Contact Pro Marine
Phone: 941-721-3000
Searchable Terms
11606, Yamaha 11606, 6D8-11604-00-00, Yamaha oversize piston rings, Yamaha .010 piston rings, Yamaha .25mm piston rings, Yamaha F115 oversize rings, Yamaha LF115 oversize rings, Yamaha F90 oversize rings, Mercury 115 EFI oversize rings, Yamaha F115 .010 rings, Vertex 24228025 rings, 24228025, Vertex .010 piston, 24228STD, Vertex standard piston, 24228050, Vertex .020 piston, 3207PS, Wiseco standard piston, 3207P2, Wiseco .020 piston, 11605, Yamaha standard piston rings, 1185SA, 1185SC, Yamaha cylinder sleeve, 4CYLSSMAIN, Yamaha F115 main bearings, 4CYLSSROD, Yamaha F115 rod bearings, 6803, Yamaha powerhead gasket kit, Yamaha engine rebuild parts
6D8-11604-01-00
6D8-11604-10-00
6D8-11604-11-00
67F-11604-00-00
67F-11604-01-00
804108T1
880898T02
880898T1
Genuine Yamaha OEM Standard Piston Ring Kit
Yamaha F75-F115 & Mercury 75-115HP Standard Piston Ring Kit - 11605
The 11605 Piston Ring Kit is a genuine Yamaha OEM standard-size piston ring set for select Yamaha F75, F80, F90, F100, F115 and LF115 four-stroke outboards.
This ring family also crosses to numerous Mercury four-stroke applications including select 75HP and 90HP carbureted engines and 75HP, 80HP, 90HP, 100HP and 115HP EFI engines.
It replaces Yamaha 6D8-11603 and 67F-11603 ring assemblies and Mercury 804107T1, 880897T02 and 880897T1.
This listing is for the standard-size piston ring kit.
If your cylinders have been bored oversize, do not use standard rings. Pro Marine also stocks the Yamaha OEM .25mm / approximately .010 oversize ring kit linked below.
OEM & Cross Reference Numbers
| Brand / Type | Part Number |
|---|---|
| Pro Marine Item | 11605 |
| Yamaha OEM | 6D8-11603-00-00 |
| Yamaha OEM | 6D8-11603-01-00 |
| Yamaha OEM | 6D8-11603-10-00 |
| Yamaha OEM | 6D8-11603-11-00 |
| Yamaha OEM | 67F-11603-00-00 |
| Yamaha OEM | 67F-11603-01-00 |
| Mercury OEM | 804107T1 |
| Mercury OEM | 880897T02 |
| Mercury OEM | 880897T1 |
Yamaha Outboard Fitment
Yamaha used this standard piston ring family across several generations of inline four-cylinder four-stroke engines.
| Engine Family | Verified Applications |
|---|---|
| Yamaha F75 | F75TLRD - 2005; F75LA, F75LA_0112, F75TLR and F75TLR_041 later applications. |
| Yamaha F80 | F80TLRX - 1999, F80TLRY - 2000, F80TLRZ - 2001, F80TJRA / F80TLRA - 2002, F80TJRB / F80TLRB - 2003, plus listed F80TXR applications. |
| Yamaha F90 | F90TJRD, F90TLRD and F90TXRD - 2005; later F90JA, F90LA, F90TJR, F90TLR, F90TXR and F90XA applications. |
| Yamaha F100 | F100TLRX / F100TXRX - 1999, F100TLRY / F100TXRY - 2000, F100TLRZ / F100TXRZ - 2001, F100TLRA / F100TXRA - 2002, F100TLRB / F100TXRB - 2003. |
| Yamaha F115 - Early Models | F115TLRY / F115TXRY - 2000, F115TLRZ / F115TXRZ - 2001, F115TJRA / F115TLRA / F115TXRA - 2002, F115TJRB / F115TLRB / F115TXRB - 2003, F115TJRC / F115TLRC / F115TXRC - 2004, F115TJRD / F115TLRD / F115TXRD - 2005. |
| Yamaha F115 - Later Models | F115JA, F115LA, F115TJR, F115TLR, F115TXR and F115XA, including the supplied 011, 061 and 0405-0411 suffix applications. |
| Yamaha LF115 | LF115TXRY - 2000, LF115TXRZ - 2001, LF115TXRA - 2002, LF115TXRB - 2003, LF115TXRC - 2004, LF115TXRD - 2005, plus later LF115TXR and LF115XA applications. |
Mercury Outboard Fitment
| Mercury Engine | Serial Number Range |
|---|---|
| 75HP Carb | 0G960500 thru 0T800999 |
| 75HP Carb | 0T801000 thru 1B226999 |
| 90HP Carb | 0G960500 thru 0T900999 |
| 90HP Carb | 0T801000 thru 1B226999 |
| 75HP EFI | 1B172291 thru 1B366822 |
| 80HP EFI | 1B227000 thru 1B366822 |
| 90HP EFI | 1B172291 thru 1B366822 |
| 100HP EFI | 1B227000 thru 1B366822 |
| 115HP EFI | 0T178500 thru 0T800999 |
| 115HP EFI | 0T801000 thru 1B226999 |
| 115HP EFI | 1B227000 thru 1B366822 |
Do not order piston rings by horsepower alone. Verify the complete Yamaha model number or Mercury serial number and confirm the original ring or piston family.
These are standard-size piston rings. Measure the cylinder bore before ordering, especially during a powerhead rebuild.
Compatible Piston Options
Pro Marine stocks both Vertex and Wiseco pistons for this engine family. Always match the piston and ring size to the finished cylinder bore.
Vertex Standard Piston - 24228STD
Size: 79.00mm Standard
Standard-size Vertex piston option for compatible Yamaha and Mercury four-stroke engines.
First OEM: 68V-W1164-02-00
View Vertex Standard Piston
Wiseco Standard Piston - 3207PS
Size: 79.00mm Standard
Wiseco 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
Requires the matching oversize ring configuration and a cylinder correctly machined for the .25mm oversize piston.
View Vertex .010 Piston
Vertex .020 Oversize Piston - 24228050
Size: .020 / .50mm Oversize
Oversize piston option for cylinders machined beyond the standard 79mm bore.
View Vertex .020 Piston
Wiseco .020 Oversize Piston - 3207P2
Size: 79.5mm / .020 Oversize
Wiseco oversize piston option for cylinders properly machined to the required finished bore.
View Wiseco .020 PistonNeed .010 Oversize Rings?
Yamaha OEM .25mm Oversize Piston Ring Kit - 11606
Yamaha OEM oversize piston ring set for the corresponding .25mm / approximately .010 oversize piston application.
First OEM: 6D8-11604-00-00
Use this option instead of 11605 when the engine has been correctly machined for the matching .25mm oversize piston.
Replacement Cylinder Sleeves
Advanced Sleeve 1185SA
OD: 3.270"
Bore: 3.118"
Length: 5.195"
Replacement cylinder sleeve for compatible Yamaha inline four-cylinder four-stroke rebuilds.
View 1185SA Sleeve
Advanced Sleeve 1185SC
OD: 3.310"
Bore: 3.118"
Length: 5.195"
Larger outside-diameter sleeve option for compatible engine block repairs.
View 1185SC SleeveMain & Connecting Rod Bearings
Pro Marine Main Bearing Set - 4CYLSSMAIN
Complete one-size crankshaft main bearing set for compatible Yamaha inline four-cylinder engines.
First OEM Reference: 6D8-11416-00-00
No Yamaha color-code bearing 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
View F115 Rod Bearing Set
Pro Marine F75-F100 Rod Bearing Set - F75SSROD
Connecting rod bearing set for compatible Yamaha F75, F80, F90 and F100 engine families.
View F75-F100 Rod Bearing SetComplete Powerhead Gasket Kit
Pro Marine Powerhead Gasket Kit - 6803
Complete gasket kit for compatible Yamaha F75-F115 powerhead rebuilding applications.
Recommended when the engine is being disassembled for piston, ring, cylinder, crankshaft or bearing service.
OEM Families: 6D8-W0001, 67F-W0001 and 68V-W0001
What is Included
This listing is for a Yamaha OEM standard-size piston ring kit. Piston rings are sized for one piston. Verify the quantity required for your complete engine rebuild before ordering.
What Piston Rings Do
Piston rings seal the space between the piston and cylinder wall while allowing the piston to move freely through the cylinder.
The ring package helps contain combustion pressure, control engine oil on the cylinder wall and transfer heat from the piston into the cylinder.
Standard Rings or Oversize Rings?
| Cylinder / Piston Size | Ring Option |
|---|---|
| Standard 79mm | 11605 Standard Yamaha OEM Ring Kit |
| .25mm / approximately .010 Oversize | 11606 Yamaha OEM Oversize Ring Kit |
| .50mm / .020 Oversize | Use the ring package specified for the exact .020 oversize piston being installed. |
Check Ring End Gap During Assembly
Piston ring end gap should be checked in the cylinder during engine assembly. Ring specifications can vary based on piston manufacturer, bore size and engine application.
Follow the Yamaha, Mercury, Wiseco or Vertex specifications applicable to the piston and engine being assembled.
Shop Yamaha Engine Rebuild Parts by Model
Need the rest of the engine components? Pro Marine organizes pistons, rings, bearings, valves, cylinder sleeves, gaskets and other internal components by Yamaha engine family.
Yamaha Outboard Engine Rebuild Parts by Model
Browse rebuild components organized by Yamaha horsepower and engine family to find the correct pistons, bearings, valves, sleeves and gasket components for your powerhead rebuild.
Key Features and Benefits
- Genuine Yamaha OEM piston ring kit
- Standard-size piston ring set
- Fits compatible 79mm piston applications
- 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
- Cross references Yamaha 6D8-11603 family
- Cross references Yamaha 67F-11603 family
- Cross references Mercury 804107T1 and 880897
- Standard Vertex and Wiseco pistons linked above
- Oversize piston options linked above
- .25mm oversize Yamaha OEM ring kit linked above
- Replacement cylinder sleeves linked above
- Main and rod bearing sets linked above
- Complete powerhead gasket kit linked above
FAQ
Is 11605 a standard-size piston ring kit?
Yes. This is the standard-size Yamaha OEM piston ring kit
for compatible 79mm piston applications.
What Yamaha OEM numbers does 11605 replace?
It cross references 6D8-11603-00-00, 6D8-11603-01-00,
6D8-11603-10-00, 6D8-11603-11-00,
67F-11603-00-00 and 67F-11603-01-00.
What Mercury numbers does this ring kit cross reference?
Mercury references include 804107T1, 880897T02 and 880897T1.
Does this fit Yamaha F115?
Yes. The supplied fitment includes extensive F115 and LF115 applications
from early engines through later model families.
Does it fit Yamaha F75 and F90?
Yes. The supplied application information includes select F75 and F90
engines.
Does this fit Yamaha F80 and F100?
Yes. Select F80 and F100 applications from approximately 1999-2003 are
included in the supplied fitment.
Does this fit Mercury 115 EFI?
Yes. Supplied Mercury fitment includes
0T178500 thru 0T800999,
0T801000 thru 1B226999, and
1B227000 thru 1B366822.
Does it fit other Mercury horsepower models?
Yes. Supplied fitment also includes select Mercury
75HP, 80HP, 90HP and 100HP applications.
What standard pistons can I use?
Pro Marine stocks the Vertex 24228STD and
Wiseco 3207PS standard 79mm piston options linked above.
Do you stock oversize piston rings?
Yes. The 11606 Yamaha OEM .25mm / approximately .010 oversize
ring kit is linked above.
Do you stock oversize pistons?
Yes. Vertex .010 and .020 pistons and a Wiseco .020 piston are linked above.
Do you have cylinder sleeves?
Yes. Advanced Sleeve 1185SA and 1185SC are linked above.
Are crankshaft and rod bearings available?
Yes. Pro Marine 4CYLSSMAIN, F75SSROD and 4CYLSSROD
bearing sets are linked above for compatible applications.
Is a complete powerhead gasket kit available?
Yes. The Pro Marine 6803 Powerhead Gasket Kit
is linked above.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with an order?
Contact Pro Marine
Phone: 941-721-3000
Searchable Terms
11605, Yamaha 11605, Yamaha piston rings, Yamaha standard piston rings, Yamaha 79mm piston rings, Yamaha F75 piston rings, Yamaha F80 piston rings, Yamaha F90 piston rings, Yamaha F100 piston rings, Yamaha F115 piston rings, Yamaha LF115 piston rings, Mercury 75 piston rings, Mercury 90 piston rings, Mercury 115 EFI piston rings, Mercury 115 four stroke rings, 6D8-11603-00-00, 6D8-11603-01-00, 6D8-11603-10-00, 6D8-11603-11-00, 67F-11603-00-00, 67F-11603-01-00, 804107T1, 880897T02, 880897T1, Yamaha 6D8-11603, Yamaha 67F-11603, Mercury 880897, 24228STD, Vertex F115 piston, 3207PS, Wiseco F115 piston, 24228025, Vertex .010 piston, 24228050, Vertex .020 piston, 3207P2, Wiseco .020 piston, 11606, Yamaha oversize piston rings, 1185SA, 1185SC, Yamaha cylinder sleeve, 4CYLSSMAIN, F75SSROD, 4CYLSSROD, 6803, Yamaha powerhead gasket kit, Yamaha engine rebuild parts
6D8-11603-01-00
6D8-11603-10-00
6D8-11603-11-00
67F-11603-00-00
67F-11603-01-00
804107T1
880897T02
880897T1
0777387
18-3676
18-7170
307239
312979
33504
3852071
508675
765604
777387
8M0214926
9-43026
Pro Marine Aftermarket Gearcase Drain Plug Seal
Pro Marine Lower Unit Drain Plug Seal - 9522P
Pro Marine 9522P is an aftermarket gearcase drain plug seal / washer for select Mercury, Mariner, Johnson, Evinrude, Nissan and Tohatsu outboard applications.
This seal installs at the applicable lower-unit drain or fill screw and helps keep gear lubricant inside the gearcase while helping prevent water from entering around the screw.
Pro Marine also stocks the genuine Mercury OEM 8M0082880 drain plug seal for customers who prefer the original Mercury-branded part.
Part Type: Lower Unit Drain Plug Seal / Washer
Manufacturer: Pro Marine
OEM or Aftermarket: Aftermarket
Application: Select Outboard Gearcase Drain and Fill Screws
Pro Marine Item #: 9522P
OEM and Cross Reference Numbers
Pro Marine 9522P is used as an aftermarket replacement for applications associated with the following OEM and cross-reference numbers:
| Cross Reference Numbers |
|---|
| 18-60103, 18-72656, 332600060, 332600060M, 332600061, 332600061M, 5040030, 8M0075255, 8M0082880, 8M0188617, 898101080, 95220, 95220010 |
Several of these numbers are documented as interchangeable drain-plug seal references across Mercury and Tohatsu applications. Always verify the original part number and engine model before ordering.
What This Part is Used For
The 9522P drain plug seal fits around the applicable gearcase drain or fill screw. When the screw is tightened, the seal helps create a barrier between the lower unit and the surrounding water.
A properly sealing drain screw helps:
- Keep lower-unit gear lubricant inside the gearcase
- Help prevent water intrusion around the drain screw
- Restore the sealing surface during routine gear-lube service
- Reduce the chance of gear-lube leakage at the screw
The drain-plug seal is a small part with an important job.
Inspect it whenever gear lube is drained. Replace the seal if it is damaged, distorted, hardened or otherwise unsuitable for reuse.
Mercury and Mariner Fitment
This aftermarket seal corresponds to applications using Mercury OEM 8M0082880 and related cross-reference numbers. Pro Marine currently lists the OEM version in the Mercury lower-unit drain plug and washer category for select small-outboard applications. :contentReference[oaicite:0]{index=0}
| Mercury Application | Serial Range / Notes |
|---|---|
| 4 / 5 / 6 HP Carb | 0R411838-Present |
| 5 HP Propane | 0R936270-1R280495 |
| 6 HP EFI 2-Cylinder 209cc | 1R363055-Present |
| 8 HP EFI 2-Cylinder 209cc | 1R281445-Present |
| 9.9 HP EFI 2-Cylinder 209cc | 1R281445-Present |
| 9.9 HP EFI ProKicker 2-Cylinder 209cc | 1R281445-Present |
| 9.9 HP EFI ProKicker 2-Cylinder 333cc | 1R008146-1R278792 |
| 10 HP EFI 2-Cylinder 333cc | 0R833820-Present |
| 15 HP EFI 2-Cylinder 333cc | 0R833820-Present |
| 15 HP EFI SeaPro 2-Cylinder 333cc | 0R833820-Present |
| 20 HP EFI 2-Cylinder 333cc | 0R833820-Present |
| 25 HP EFI 3-Cylinder | 1R154758-Present |
| 25 HP EFI SeaPro 3-Cylinder | 1R154758-Present |
| 25 HP EFI Jet 3-Cylinder | 1R154758-Present |
| 30 HP EFI 3-Cylinder | 1R154758-Present |
Johnson and Evinrude Fitment
Cross-reference data supplied for this application includes numerous Johnson and Evinrude 3-15 HP four-stroke model families. Verify the complete model number, including the suffix, before ordering.
| Brand | Horsepower | Model Families |
|---|---|---|
| Johnson | 3 HP | B3R4, B3RG4 |
| Johnson | 4 HP | B4R4, B4RG4, B4RGL4, B4RL4 |
| Johnson | 6 HP | B6R4, B6RG4, B6RGL4, B6RL4, B6RX4 |
| Johnson | 10 HP | B10EGL4, B10EL4, B10PL4, B10PX4, B10R4, B10RG4, B10RGL4, B10RL4, B10TEL4, B10TPL4, B10TPX4 |
| Johnson | 15 HP | B15PL4, B15R4, B15RG4, B15RGL4, B15RL4, B15TE4, B15TEL4 |
| Evinrude | 3 HP | E3R4, E3RG4 |
| Evinrude | 4 HP | E4R4, E4RL4 |
| Evinrude | 6 HP | E6R4, E6RG4, E6RGL4, E6RL4, E6RX4 |
| Evinrude | 10 HP | E10EL4, E10PGL4, E10PL4, E10PX4, E10R4, E10RG4, E10RGL4, E10RL4, E10TEL4, E10TPL4, E10TPX4 |
| Evinrude | 15 HP | E15PGL4, E15PL4, E15R4, E15RG4, E15RGL4, E15RL4, E15TE4, E15TEG4, E15TEL4 |
Tohatsu and Nissan Outboard Fitment
The 9522P also corresponds to Tohatsu and Nissan drain-plug seal applications associated with the 332-60006-0 / 332-60006-1 family of part numbers. Independent cross-reference sources also associate those Tohatsu numbers with Mercury 8M0082880 and 95220. :contentReference[oaicite:1]{index=1}
| Brand | Horsepower | Years Shown in Application Data |
|---|---|---|
| Nissan | 2 HP | 2006 |
| Nissan | 2.5 HP | 2002, 2003, 2006 |
| Nissan | 3.5 HP | 2002, 2003, 2006 |
| Nissan | 4 HP | 2002, 2005 |
| Nissan | 5 HP | 2002, 2003, 2005 |
| Nissan | 6 HP | 2002, 2005 |
| Nissan | 8 HP | 2003, 2004, 2006 |
| Nissan | 9.8 HP | 2003, 2004, 2006 |
| Nissan | 9.9 HP | 2003 |
| Nissan | 15 HP | 2002, 2003, 2008 |
| Nissan | 18 HP | 2002, 2003 |
| Nissan | 20 HP | 2008 |
| Nissan | 25 HP | 2002, 2003 |
| Nissan | 30 HP | 2002, 2003 |
| Nissan | 35 HP | 2002 |
| Nissan | 40 HP | 2002, 2003, 2004, 2006 |
| Nissan | 50 HP | 2002, 2003, 2006 |
| Nissan | 60 HP | 2003 |
| Nissan | 70 HP | 2003, 2006 |
| Nissan | 90 HP | 1996, 2006 |
| Tohatsu | 90 HP | 1996 |
| Nissan | 115 HP | 2006 |
| Nissan | 120 HP | 2002, 2003 |
| Nissan | 140 HP | 2002, 2003 |
Nissan / Tohatsu Parts Diagram Applications
The supplied application data shows this seal appearing in multiple assemblies and parts diagrams, including:
- Assembly Kit / Assembly Kits
- Bar Handle
- Bracket Reverse Lock
- Carburetor
- Cylinder Crank Case Assembly
- Cylinder Crankcase Assembly
- Cylinder Crankcase and Reed Valve
- Cylinder Head
- Drive Housing / Gear Case
- Drive Shaft Housing
- Drive Shaft Housing / Gear Case
- Drive Shaft Housing / Gear Case / Steering Handle
- Electric Starter
- Fuel Pump
- Fuel Tank Remote
- Gear Case
- Gear Case / Drive Shaft
- Gear Shift
- Inlet / Reed Valve
- Magneto
- Motor Cover
- Piston / Crank Shaft
- Recoil Starter
- Remote Control
- Starter Lock
- Throttle Mechanism
- Transmission / Water Pump
The application data spans many horsepower ranges, years and gearcase configurations. A listed horsepower does not mean every engine of that horsepower uses this seal.
Verify the exact model, year and original drain-plug seal number before ordering.
Genuine Mercury OEM Version Available
Prefer the genuine Mercury-branded component? Pro Marine also stocks Mercury OEM 8M0082880.
Both listings give customers a choice between the OEM Mercury part and the Pro Marine aftermarket replacement.
View Mercury OEM 8M0082880Pro Marine or OEM Mercury?
| Option | Part Number | Brand |
|---|---|---|
| Aftermarket | 9522P | Pro Marine |
| OEM | 8M0082880 | Mercury Marine |
Gear-Lube Service Tips
- Inspect the drain and fill screw seals whenever the lower-unit oil is changed.
- Replace seals that are damaged, distorted, hardened or questionable.
- Clean the drain screw and sealing surface before reassembly.
- Use the correct gear lubricant for the engine and gearcase.
- Install and tighten the drain/fill screws according to the manufacturer's procedure.
- Inspect for leakage after service.
- If the drained lubricant appears milky, investigate possible water intrusion before returning the engine to service.
Key Features and Benefits
- Pro Marine aftermarket drain plug seal
- Part number 9522P
- Replacement option for Mercury 8M0082880 applications
- Cross-references Mercury 95220 and 8M0075255 applications
- Cross-references Tohatsu 332600060 / 332600061 applications
- Used on select Mercury and Mariner lower units
- Application data includes select Johnson and Evinrude models
- Application data includes select Nissan and Tohatsu models
- Helps seal the applicable lower-unit drain/fill screw
- OEM Mercury version also available
FAQ
What is Pro Marine 9522P?
It is an aftermarket lower-unit drain plug seal / washer
for select outboard applications.
Does 9522P replace Mercury 8M0082880?
This Pro Marine version is offered as the aftermarket alternative for
applications using Mercury 8M0082880 and its associated cross references.
Does it replace Mercury 95220?
Yes. 95220 is part of the cross-reference family associated with
8M0082880. :contentReference[oaicite:2]{index=2}
Does it cross to Tohatsu 332600060?
Cross-reference sources associate Tohatsu 332-60006-0 / 332600060 and
332-60006-1 / 332600061 with Mercury 8M0082880 and 95220 applications. :contentReference[oaicite:3]{index=3}
Does this fit Johnson and Evinrude?
The supplied fitment data includes numerous Johnson and Evinrude
four-stroke model families from 3-15 HP. Verify the complete model number
before ordering.
Does this fit Nissan and Tohatsu?
Yes, the supplied fitment data includes numerous Nissan applications and a
specifically listed 1996 Tohatsu 90 HP application. Verify the exact engine
model and original part number because not every engine within a listed
horsepower range uses the same seal.
Do you stock the genuine Mercury version?
Yes. Pro Marine also stocks
Mercury OEM 8M0082880
.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
9522P, 8M0082880, 8M0075255, 8M0188617, 898101080, 95220, 95220010, 18-60103, 18-72656, 332600060, 332600060M, 332600061, 332600061M, 5040030
Searchable Terms
Pro Marine drain plug seal, Mercury drain plug seal aftermarket, Mercury lower unit drain washer, Tohatsu drain plug gasket, Nissan drain plug seal, Johnson drain plug seal, Evinrude drain plug washer, gearcase drain screw seal, lower unit drain gasket, gear lube drain plug washer
18-72656
332600060
332600060M
332600061
332600061M
5040030
8M0082880
898101080
95220
95220010
25hp 2004 & Up
30hp 2004 & Up
40hp 2004 & Up
50hp 2004 & Up
75hp 2007 & Up
90hp 2007 & Up
100hp Pre 1997Â
Johnson / Evinrude
10hp aa Model, 2012 (aa, ab, af Model)
15hp aa Model, 2012 (aa, ab Model)
Mercury
8hp 1995-2024
9.9hp 1995-2000
13.5hp 1999-2006
15hp 1998-2021
25hp 1998-2006
30hp 1999-2021
40hp 1999-2006
50hp 1995-2001
75hp 2000-2003
90hp 2000-2003
Â
Â
Â
Tohatsu
8hp 2004-2022
9.8hp 2003-2022
9.9hp 2002-2011Â
15hp 2002-2017
18hp 2002-2008Â
20hp 2008-2017
25hp 2002-2018
30hp 2002-2018Â
60hp 2014-2019
75hp 2014-2019
90hp 2014-2019Â
Yamaha
4hp 1986-1988, 2001-2023
6hp 2001-2022Â
8hp 2001-2024
9.9hp 1985-2024
15hp 1998-2024
20hp 2006-2024Â
25hp 1998-2018
30hp 2005-2024Â
40hp 2000-2024
50hp 1995-2024
60hp 2005-2024
70hp 2012-2023Â
75hp 2005-2024
80hp 1999-2000Â
90hp 2005-2024Â
115hp 2005-2024Â
130hp 2003, 2021
150hp 2003-2010Â
175hp 2003-2005Â
200hp 2003-2019
225hp 2003-2018
250hp 2003-2018
300hp 2004-2009
350hp 2008-2018
425hp 2018-2023Â
450hp 2023
HZW919300003
HZY3-19300-023
HZY319300023
13012
18-3541
18-3611
18-3628
18-3628-1
18-43175
19300-ZW9-003
19300-ZY3-023
3NV010300
3NV010300M
3R3010300
3R3010300M
3SA010300
3SA010300M
5041185
6AH-12411-00-00
6G8-12411-00-00
6G8-12411-01-00
6G8-12411-02-00
6G8-12411-03-00
66M-12411-00-00
66M-12411-01-00
8M0119207
825212
825212A1
825212T02
825212001
8252121A1
855676
855676A1
855676002
855676003
855676005
9-43036
0585267
0586100
0777705
0777710
18-5656
385949
586100
777705
777710
FFF000068
F284659
F284659-1
F284659-2
F2846591
F2846592
F691659
0385503
0777369
18-1395
30-F284659-2
385503
54816
64424
64424T
777369
803893T
9-51106
0384778
0385844
0585266
385667
57385
57389
18-1352
22800
378252
67445
893680T03
17647
18526
8M0188327
861597
861597
865448A01