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Outboard Motor Parts | OEM & Aftermarket
Shop OEM and aftermarket outboard motor parts for Mercury, Yamaha, Suzuki, Honda, Johnson / Evinrude / E-TEC, Tohatsu / Nissan, and Chrysler / Force engines. Pro Marine USA carries parts for routine maintenance, troubleshooting, repair, and complete marine engine rebuilds.
Browse by outboard manufacturer or engine system, or use our OEM parts lookup to identify the correct part number before ordering. Find cooling, fuel, ignition, electrical, internal engine, lower unit, steering, trim, service kit, gasket, seal, and rebuild parts in one place.
Shop Outboard Parts by Manufacturer
Chrysler / Force Outboard Parts for Chrysler and Force outboard repair 
Honda Outboard Honda cooling, fuel, electrical, and engine parts 
Johnson / Evinrude / E-TEC Outboard Johnson, Evinrude, E-TEC, and OMC replacement parts 
Mercury Outboard Mercury and Mariner maintenance, repair, and rebuild parts 
Suzuki Outboard Suzuki service, lower unit, fuel, and engine parts 
Tohatsu / Nissan Outboard Tohatsu and Nissan outboard replacement parts 
Yamaha Outboard Yamaha maintenance, repair, lower unit, and rebuild parts Find the Correct Outboard Part
Not sure which part fits your engine? Start with the engine manufacturer, horsepower, model number, serial number, and year whenever available.
Our OEM parts lookup lets you view factory parts diagrams and identify the original part number for many popular outboard engines. Once you have the OEM number, search Pro Marine to find available OEM and aftermarket replacement options.
Use Our OEM Parts Lookup »Shop Outboard Parts by Engine System
Outboard engines use several interconnected systems. Select your manufacturer above to browse the exact categories available for your engine, including the following common repair and maintenance areas.
Common Outboard Problems and Where to Start
- Engine overheating: inspect the water pump, impeller, thermostat, pressure-control components, cooling passages, and engine anodes.
- Hard starting or rough idle: check fuel delivery, carburetor or injector operation, spark plugs, ignition components, filters, and intake sealing.
- Weak spark or no spark: test ignition coils, stators, switch boxes or ignition modules, sensors, wiring, grounds, and related electrical components.
- Low compression or poor power: inspect pistons, rings, cylinder condition, head and powerhead gaskets, bearings, and other internal engine components.
- Milky gear lube: inspect prop shaft, driveshaft, shift shaft, bearing carrier, and other lower unit seals for water intrusion.
- Lower unit or gearcase noise: inspect bearings, gears, clutch components, shafts, and gear lube condition before continued operation.
- Trim or steering problems: inspect hydraulic fluid level, seals, hoses, trim motors, pumps, steering cylinders, and mechanical connections.
Why Buy Outboard Parts from Pro Marine USA?
- OEM and aftermarket replacement options for major outboard engine brands.
- Marine engine parts for routine maintenance, professional repair, and complete rebuild projects.
- OEM diagram and part-number lookup tools to help identify the correct component before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large selection of service kits, engine parts, lower unit components, fuel system parts, electrical parts, steering, and rigging products.
- Same-day weekday shipping available on qualifying in-stock orders placed before the shipping cutoff.
OEM and Aftermarket Outboard Parts
OEM parts are supplied by the original engine manufacturer and are designed for the specific engine application. Aftermarket parts are replacement components produced by independent marine parts manufacturers and may provide additional availability or value for many common repairs.
Pro Marine carries both genuine OEM parts and quality aftermarket replacement parts for many outboard maintenance, repair, and rebuild applications. Always confirm fitment using the engine model, serial number, horsepower, year range, or OEM part number when available.
Frequently Asked Questions
How do I find the correct parts for my outboard motor?
Start by identifying the engine manufacturer, horsepower, model number, serial number, and year. Select the manufacturer above to browse by engine system, or use the OEM parts lookup to locate the original part number from a factory diagram.
Can I search Pro Marine by OEM part number?
Yes. If you already have the OEM part number, enter it 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.
What information should I have before ordering an outboard part?
Have the engine manufacturer, horsepower, model number, serial number, and year whenever possible. An OEM part number from the original component or parts diagram is especially helpful because visually similar parts may fit different engine families.
What is the difference between OEM and aftermarket outboard parts?
OEM parts come from the original engine manufacturer. Aftermarket parts are replacement components manufactured by other marine parts companies for compatible applications. Pro Marine carries both OEM and aftermarket options across many common outboard engine systems.
Are aftermarket outboard motor parts reliable?
Quality aftermarket marine parts are commonly used for maintenance, professional repair, and engine rebuilding. The best option depends on the application, manufacturer, availability, and customer preference.
Do you carry parts for older outboard motors?
Yes. Pro Marine carries parts for many older Mercury, Mariner, Johnson, Evinrude, Chrysler, Force, Yamaha, Honda, Suzuki, Nissan, and Tohatsu outboards. Availability varies by engine family and component.
What outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump impellers, complete water pump kits, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Outboard parts can vary by model, serial range, horsepower, and production year. Confirm the OEM part number or engine identification information whenever possible before ordering.
Pro Marine Shift Shaft Seal Carrier
Yamaha 25 Inch Gearcase Shift Shaft Seal Carrier Replacement
This Pro Marine replacement shift shaft seal carrier is designed for select Yamaha offshore lower units using 25 inch gearcases.
Designed as a direct replacement for Yamaha OEM part number 65N-45321-00-00, this carrier supports the shift shaft sealing system inside compatible Yamaha lower units.
Compatible Yamaha Applications
| Engine Range | Engine Type | Shaft Length | Application Notes |
|---|---|---|---|
| F150 | Yamaha FourStroke | 25 Inch | Select offshore applications |
| F175 / F200 | Yamaha FourStroke | 25 Inch | Select mechanical and digital models |
| F225 / F250 | Yamaha FourStroke | 25 Inch | Select offshore gearcase applications |
| F300 | Yamaha FourStroke | 25 Inch | Select V6 offshore applications |
If your outboard uses a 30 inch shaft gearcase, you will typically need this carrier instead:
View 30 Inch Shift Shaft Seal Carrier
Required Shift Shaft Seal
Shift Shaft Seal 7620
Replacing the seal during lower unit service is strongly recommended to help maintain proper sealing and prevent water intrusion into the gearcase.
OEM Cross Reference Numbers
| Type | Part Number |
|---|---|
| Yamaha OEM Number | 65N-45321-00-00 |
| Pro Marine | Direct Replacement |
What This Shift Shaft Seal Carrier is Used For
This Pro Marine shift shaft seal carrier supports the shift shaft sealing system inside compatible Yamaha offshore lower units.
The carrier helps properly position and retain the shift shaft seal while helping protect the lower unit from water intrusion and gear lubricant leakage.
These carriers are commonly replaced during lower unit resealing, corrosion repair, shift shaft service, or complete gearcase rebuilds.
Replacing worn or damaged carriers can help extend lower unit life and maintain reliable sealing performance in demanding saltwater applications.
Key Features and Benefits
- Pro Marine replacement shift shaft seal carrier
- Direct replacement for Yamaha OEM 65N-45321-00-00
- Fits compatible Yamaha 25 inch offshore gearcases
- Supports proper shift shaft sealing
- Helps prevent water intrusion into the lower unit
- Common replacement during lower unit resealing
- Marine-grade corrosion-resistant construction
- Designed for dependable lower unit service repairs
Shift Shaft Seal Carrier Details
- Brand: Pro Marine
- Part Type: Shift Shaft Seal Carrier
- Replaces Yamaha OEM: 65N-45321-00-00
- Application: Yamaha 25 Inch Gearcases
- Engine Compatibility: Select Yamaha F150-F300 FourStroke models
- System: Lower Unit / Gearcase
- Associated Seal: 7620
FAQ
What shaft length is this carrier designed for?
This carrier is designed specifically for compatible Yamaha 25 inch gearcases.
Will this fit a 30 inch Yamaha lower unit?
No. Most 30 inch applications use a different carrier. See the linked 30 inch version for those applications.
Is this a genuine Yamaha OEM part?
No. This is a Pro Marine aftermarket replacement part designed to replace Yamaha OEM part number 65N-45321-00-00.
Should I replace the shift shaft seal at the same time?
Yes. Replacing the seal during carrier service is strongly recommended to help maintain proper lower unit sealing.
What seal works with this carrier?
This carrier uses shift shaft seal 7620 for compatible 25 inch gearcases.
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.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
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