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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.
5006653
9-53417
0769122
369033020M
0389142
0390011
0391049
0432955
0432956
0435673
0436954
0436955
0436957
0438591
0777804
432955
777804
802497
802499
802499A1
879028
9-43208
0316981
0327640
0327810
0338742
0364998
0766477
338742
364998
766477
Evinrude E-TEC G2 Thermostat Service Kit
Evinrude E-TEC G2 200-300HP Thermostat Kit - 13345
The 13345 Thermostat Kit is designed for select Evinrude E-TEC G2 200HP through 300HP outboards.
Verified engine families include AB250 / AB300, AF200-300, AG200-300 and AH200-300 E-TEC G2 models.
This kit brings together the thermostat service components commonly needed when servicing the thermostat assembly, with related thermostat cover and spring references listed below.
AB: 250HP / 300HP
AF: 200-300HP
AG: 200-300HP
AH: 200-300HP
Fitment
| Evinrude E-TEC G2 Model Family | Horsepower |
|---|---|
| AB | 250HP / 300HP |
| AF | 200HP through 300HP |
| AG | 200HP through 300HP |
| AH | 200HP through 300HP |
Verify your complete Evinrude model designation before ordering. E-TEC G2 engines were produced in multiple model families and horsepower configurations, and thermostat components should be confirmed against the exact engine application.
Thermostat Kit Components
The thermostat assembly uses the following components. Stocked items are linked below for quick replacement, while the thermostat cover and spring are noted as special-order components.
Thermostat Cap O-Ring - 1188
Sealing O-ring used at the thermostat cap / cover assembly.
Thermostat cover used with the E-TEC G2 thermostat assembly.
Status: Special Order
Spring used in the thermostat assembly to maintain the proper thermostat position and operation.
Status: Special Order
Thermostat Gasket - 10-1155
Replacement gasket used to seal the thermostat assembly during installation.
143°F Brass Thermostat - 403
Replacement thermostat used in compatible Evinrude E-TEC G2 cooling-system applications.
Temperature: 143°F
What is Included
The 13345 Thermostat Kit is intended to simplify thermostat service on compatible Evinrude E-TEC G2 engines.
The thermostat system uses the components shown above, including the thermostat, thermostat gasket, thermostat cap O-ring, thermostat cover and spring. Verify the exact contents of the 13345 package shown on the product listing before ordering any individual components separately.
Why Replace the Thermostat?
The thermostat regulates coolant flow through the engine so the powerhead reaches and maintains the correct operating temperature.
A thermostat that sticks open can cause the engine to operate too cool, while a thermostat that sticks closed or does not open correctly can contribute to elevated engine temperature or overheating.
Common Reasons for Thermostat Service
- Routine cooling-system maintenance
- Engine running hotter than normal
- Engine running cooler than expected
- Thermostat sticking or corroded
- Salt or mineral buildup around the thermostat housing
- Cooling-system inspection during major engine service
- Damaged thermostat gasket or O-ring
- Thermostat housing opened for inspection or repair
Inspect the Complete Thermostat Assembly
When the thermostat housing is opened, inspect more than just the thermostat. The gasket, cap O-ring, spring and thermostat cover should also be checked for wear, corrosion, damage or deterioration.
Replacing damaged sealing components during thermostat service can help prevent coolant leaks and avoid reopening the housing for a minor seal failure later.
Thermostat Service Components
| Component | Part Number | Availability |
|---|---|---|
| Thermostat Cap O-Ring | 1188 | Linked Above |
| Thermostat Cover | 5008903 | Special Order |
| Thermostat Spring | 0351145 | Special Order |
| Thermostat Gasket | 10-1155 | Linked Above |
| 143°F Brass Thermostat | 403 | Linked Above |
Key Features and Benefits
- Thermostat service kit for Evinrude E-TEC G2 outboards
- Fits select G2 200HP through 300HP applications
- Fits AB250 and AB300 model families
- Fits AF200-300 model families
- Fits AG200-300 model families
- Fits AH200-300 model families
- 143°F replacement thermostat available separately
- Thermostat gasket available separately
- Thermostat cap O-ring available separately
- Thermostat cover 5008903 available by special order
- Thermostat spring 0351145 available by special order
- Convenient option when servicing the complete thermostat assembly
FAQ
What engines does thermostat kit 13345 fit?
It fits select Evinrude E-TEC G2 200-300HP engines,
including AB250 / AB300 and AF, AG and AH 200-300HP model families.
Does this fit Evinrude E-TEC G2 300HP?
Yes. The supplied fitment includes multiple 300HP G2 applications within
the AB, AF, AG and AH model families.
What thermostat is used with this kit?
The linked 403 brass thermostat is rated at
143°F.
Can I buy the thermostat separately?
Yes. The 403 thermostat is linked above.
Can I buy the thermostat gasket separately?
Yes. The 10-1155 thermostat gasket is linked above.
Can I buy the thermostat O-ring separately?
Yes. The 1188 thermostat cap O-ring is linked above.
Is the thermostat cover available?
Yes. Thermostat cover 5008903 is listed as
special order.
Is the thermostat spring available?
Yes. Spring 0351145 is available by special order.
Should I replace the gasket and O-ring when servicing the thermostat?
Inspect both sealing components whenever the housing is opened and replace
them if they are damaged, hardened, flattened or otherwise unsuitable for
reuse.
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 verifying your E-TEC G2 model?
Contact Pro Marine
Phone: 941-721-3000
Searchable Terms
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