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Yamaha Outboard Parts
Shop OEM and aftermarket Yamaha outboard parts for maintenance, repair, troubleshooting, and complete engine rebuild projects. Browse Yamaha marine parts by system, including cooling, fuel, electrical, internal engine, lower unit, steering, trim, and routine service parts.
Pro Marine USA carries parts for Yamaha 2-stroke, Four Stroke, VMAX SHO, HPDI, and offshore outboards. Verify your engine model code, serial information, or OEM part number whenever possible before ordering.
Shop Yamaha 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
Rebuilding a Yamaha Outboard?
Shop internal Yamaha engine rebuild parts by engine family to quickly find pistons, rings, cylinder sleeves, bearings, connecting rods, gaskets, valves, and other powerhead components for your application.
Shop Engine Rebuild Parts by Model »Find the Correct Yamaha Outboard Part
Yamaha parts can vary by horsepower, model code, production year, and engine family. Use the OEM parts lookup to identify the original Yamaha part number from the factory diagram before ordering.
Once you have the OEM number, search Pro Marine USA for available genuine Yamaha and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Yamaha Outboard Engine Families
Pro Marine USA supports many popular Yamaha outboards across a wide horsepower range. Always confirm your exact model information before ordering parts.
- Portable and Midrange: Yamaha 2HP through 60HP 2-stroke and Four Stroke applications
- Inline Four-Cylinder: popular Yamaha F70 through F150 platforms
- V6 Four Stroke: Yamaha V6 engine families across multiple horsepower ranges
- VMAX SHO: performance-oriented Yamaha SHO applications
- HPDI: high-pressure direct-injection Yamaha 2-stroke applications
- High-Horsepower Offshore: large-displacement Yamaha offshore platforms
Common Yamaha Outboard Repair Areas
- Engine overheating: water pumps, impellers, thermostats, cooling passages, and engine anodes.
- Hard starting or rough running: fuel pumps, filters, injectors, carburetors, spark plugs, ignition components, and intake components.
- Charging or ignition problems: ignition coils, stators, rectifier/regulators, sensors, wiring, and grounds.
- Low compression or power loss: pistons, rings, cylinders, valves, bearings, gaskets, and other internal engine components.
- Lower unit problems: seals, bearings, gears, shafts, and gear lube components.
- Trim or steering problems: trim motors, hydraulic components, steering cylinders, hoses, and seals.
Why Buy Yamaha Outboard Parts from Pro Marine USA?
- Genuine Yamaha OEM and aftermarket replacement options for many applications.
- Parts for maintenance, professional repair, engine rebuilds, lower units, fuel systems, electrical systems, steering, and trim.
- OEM diagram and part-number lookup tools to help identify the correct component.
- Dealer pricing available for qualified marine businesses.
- Large selection of Yamaha service kits and repair components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Yamaha outboard part?
Start with the engine horsepower, model code, production year, and available identification information. Use the OEM parts lookup to identify the original Yamaha part number whenever possible.
Can I search Yamaha parts by OEM part number?
Yes. Enter the Yamaha OEM part number into the Pro Marine USA site search to locate available OEM and aftermarket replacement options.
Do Yamaha outboard parts vary by model and year?
Yes. Yamaha may use different components on engines with the same horsepower depending on model code, engine family, and production range.
Do you carry Yamaha engine rebuild parts?
Yes. Pro Marine USA carries pistons, rings, bearings, connecting rods, cylinder sleeves, gaskets, valves, and other internal engine components for many Yamaha applications. You can also shop our Engine Rebuild Parts by Model section to narrow parts by engine family.
Do you carry both OEM and aftermarket Yamaha parts?
Yes. Pro Marine USA offers genuine Yamaha parts along with aftermarket replacement options for many Yamaha maintenance, repair, and rebuild applications.
What Yamaha 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 model-specific service kit components.
Fitment Tip: Yamaha parts can vary by model code, engine family, production year, and horsepower. Confirm the OEM part number or complete engine identification information whenever possible before ordering.
18-0810
18-0810
518-18
6G5-14416-A1-00
6G5-14416-00-00
518-21
6K7-13621-A1-00
6K7-13621-00-00
6H3-13622-A1-00
6H3-13622-00-00
18-99098
518-12
688-13621-A1-00
688-13621-00-00
18-0844
18-0844
18-0844
541-27
688-12414-A1-00
688-12414-00-00
9-60003
18-45714
18-60508
18-60508
18-60508
18-60508
18-60508
18-60508
18-60508
18-60508
541-34
541-34
541-34
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
60V-12414-A0-00
13461
13461
134611
134611
134612
37630
516-22
6E5-11610-21-00
6E5-11610-22-00
6E5-11610-23-00
6J9-11610-20-00
6K7-11610-20-00
6K7-11610-21-00
Pro Marine Yamaha Piston Ring Kit
Yamaha 115-250HP Standard Piston Ring Kit
The Pro Marine 3937 Standard Piston Ring Kit is a premium aftermarket replacement for a wide range of Yamaha 2-stroke outboards. Designed for standard bore applications, this ring kit replaces several Yamaha OEM piston ring assemblies and is commonly used during powerhead rebuilds, piston replacement, compression repairs, and complete engine overhauls.
Pro Marine piston rings are manufactured to meet or exceed OEM specifications for fit, durability, and performance. This kit replaces Yamaha OEM numbers 6K7-11601-02-00, 6R5-11603-00-00, 64D-11603-00-00, 64D-11603-01-00, and 64D-11603-02-00.
Compatible Applications
Based on Yamaha OEM supersessions and application data, this piston ring kit is commonly found in many Yamaha V4 and V6 carbureted, EFI, Saltwater Series, ProV, Excel, and OX66 outboards using the OEM numbers listed above.
| Manufacturer | Models | Years |
|---|---|---|
| Yamaha | 115HP 2-Stroke | Various Applications |
| Yamaha | 130HP 2-Stroke | Various Applications |
| Yamaha | 150HP 2-Stroke | Various Applications |
| Yamaha | 175HP 2-Stroke | Various Applications |
| Yamaha | 200HP 2-Stroke | Various Applications |
| Yamaha | 225HP 2-Stroke | Various Applications |
| Yamaha | 250HP 2-Stroke | Various Applications |
Yamaha used multiple piston and ring configurations across engines with similar horsepower ratings. Always verify your original Yamaha OEM piston ring number before ordering.
This kit replaces OEM numbers 6K7-11601-02-00, 6R5-11603-00-00, 64D-11603-00-00, 64D-11603-01-00, and 64D-11603-02-00.
OEM & Cross Reference Numbers
| Type | Part Number |
|---|---|
| Pro Marine | 3937 |
| Yamaha OEM | 6K7-11601-02-00 |
| Yamaha OEM | 6R5-11603-00-00 |
| Yamaha OEM | 64D-11603-00-00 |
| Yamaha OEM | 64D-11603-01-00 |
| Current Yamaha OEM | 64D-11603-02-00 |
| Sierra | 18-39320 |
Product Specifications
- Brand: Pro Marine
- Part Number: 3937
- Part Type: Piston Ring Kit
- Size: Standard Bore
- Bore Diameter: 3.544"
- Engine Type: Yamaha 2-Stroke Outboards
- Application: Standard Bore Rebuilds and Piston Service
Alternative Brand Available
GLM 3937GM Standard Piston Ring Kit
Looking for the GLM version? We also stock the GLM 3937GM Standard Piston Ring Kit which fits the same Yamaha applications and OEM cross references.
What This Part Is Used For
Piston rings play a critical role in maintaining cylinder compression, controlling combustion chamber sealing, and transferring heat from the piston to the cylinder wall. During engine rebuilds, replacing worn piston rings is essential for restoring proper compression and performance.
This standard bore ring kit is intended for engines that remain within factory bore specifications and do not require oversized pistons or rings.
Key Features & Benefits
- Pro Marine premium aftermarket piston ring kit
- Standard bore replacement
- 3.544" bore size
- Replaces multiple Yamaha OEM piston ring assemblies
- Ideal for powerhead rebuilds and piston replacement
- Manufactured to OEM specifications
- GLM alternative available and linked above
FAQ
Is this a standard size ring kit?
Yes. Part number 3937 is a standard bore piston ring kit.
What Yamaha OEM numbers does this replace?
It replaces 6K7-11601-02-00, 6R5-11603-00-00, 64D-11603-00-00, 64D-11603-01-00, and 64D-11603-02-00.
Can I use this on an oversized piston?
No. This is a standard-size ring kit. Oversized pistons require matching oversized rings.
Do you carry another brand?
Yes. We also stock the GLM 3937GM version linked above.
Should I replace rings during a rebuild?
Yes. Replacing piston rings is considered standard practice during most powerhead rebuilds and piston service procedures.
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 internal engine 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 Terms
3937, 3937GM, Yamaha piston ring kit, Yamaha standard ring kit, Yamaha 115 piston rings, Yamaha 130 piston rings, Yamaha 150 piston rings, Yamaha 175 piston rings, Yamaha 200 piston rings, Yamaha 225 piston rings, Yamaha 250 piston rings, Yamaha V4 piston rings, Yamaha V6 piston rings, Yamaha powerhead rebuild, 6K7-11601-02-00, 6R5-11603-00-00, 64D-11603-00-00, 64D-11603-01-00, 64D-11603-02-00, 18-39320, Pro Marine 3937, GLM 3937GM
6K7-11601-02-00
6R5-11603-00-00
64D-11603-00-00
64D-11603-01-00
64D-11603-02-00
6E5-11610-00-00
6E5-11610-01-00
6E5-11610-02-00
6E5-11610-03-00
6J9-11610-00-00
6K7-11610-00-00
6K7-11610-01-00
6K7-11610-03-00
6R5-11605-00-00
64D-11605-00-00
64D-11605-01-00
64D-11605-02-00
