S2K Commerce - Products Dropdown
Actions
S2K Commerce - Order Entry
Actions
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.
8M6003035
885349500
6C5-46241-00-00
61A-45611-02-00
69J-45611-00-00
81447M
83859M
83859T
650-11370-01-00
80727M
OEM Yamaha Manual Release Screw O-Ring
Yamaha F25-F40 Power Trim & Tilt Manual Release O-Ring
This genuine OEM Yamaha O-ring is used on the manual release screw in select Yamaha F25 through F40 power trim and tilt assemblies.
The manual release screw O-ring helps seal the trim and tilt hydraulic system around the manual release valve area to help prevent fluid leakage and maintain proper trim operation.
Compatible Applications
| Engine Range | Engine Type | System | Application Notes |
|---|---|---|---|
| Yamaha F25 | FourStroke | Power Trim & Tilt | Select models using 6D8-style trim assembly |
| Yamaha F30 | FourStroke | Power Trim & Tilt | Select models using 6D8-style trim assembly |
| Yamaha F40 | FourStroke | Power Trim & Tilt | Select models using 6D8-style trim assembly |
Always verify your Yamaha model, year, serial number, and trim assembly diagram before ordering hydraulic trim seals and O-rings.
OEM Part Numbers & Cross References
| Brand | Part Number |
|---|---|
| Yamaha OEM | 6D8-43863-00-00 |
| Alternate Search Format | 6D8438630000 |
What This O-Ring is Used For
This Yamaha O-ring seals the manual release screw area of compatible power trim and tilt hydraulic assemblies.
The manual release screw allows the engine to be manually tilted when hydraulic trim operation is unavailable or when service access is needed.
A worn or damaged O-ring can allow hydraulic fluid seepage around the manual release screw and may affect trim and tilt performance.
Replacing the O-ring during manual release screw service helps maintain proper hydraulic sealing and reliable trim system operation.
Key Features and Benefits
- Genuine OEM Yamaha replacement O-ring
- Fits select Yamaha F25-F40 FourStroke trim assemblies
- Used on the manual release screw / manual release valve area
- Helps seal the power trim and tilt hydraulic system
- Helps prevent hydraulic fluid leakage
- Common replacement during trim system service
- OEM Yamaha fit and material compatibility
- Sold individually
O-Ring Details
- Brand: Yamaha
- Part Type: Manual Release Screw O-Ring
- OEM Part Number: 6D8-43863-00-00
- Application: Yamaha F25-F40 Power Trim & Tilt Systems
- System: Trim / Tilt Hydraulic System
- Use: Manual release screw sealing
- Quantity Sold: Each
FAQ
What does this O-ring fit?
This O-ring fits select Yamaha F25, F30, and F40 FourStroke outboards using compatible power trim and tilt assemblies.
Where is this O-ring used?
It is used on the manual release screw area of the Yamaha power trim and tilt hydraulic assembly.
Is this a genuine Yamaha part?
Yes. This is a genuine OEM Yamaha O-ring, part number 6D8-43863-00-00.
Can a bad manual release screw O-ring cause a leak?
Yes. A worn or damaged O-ring can allow hydraulic fluid to leak around the manual release screw area.
Should I verify my serial number before ordering?
Yes. Yamaha used different trim assemblies depending on model and production range, so serial number and diagram verification are recommended.
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.
- Hydraulic trim components should be installed only after confirming correct fitment.
- 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
6D8-43863-00-00, 6D8438630000, Yamaha manual release screw O-ring, Yamaha trim release screw O-ring, Yamaha power trim O-ring, Yamaha trim tilt seal, Yamaha F25 trim O-ring, Yamaha F30 trim O-ring, Yamaha F40 trim O-ring, Yamaha F25 power trim seal, Yamaha F40 power trim seal, Yamaha trim hydraulic O-ring
92900-18200-00
92901-18200-00
92902-18200-00
92990-18200-00
61A-81950-01-00
81950
Sierra Yamaha 4-Stroke Timing Belt
Yamaha F200, F225 & F250 Timing Belt - Sierra 18-15132 / 6P2-46241
The Sierra 18-15132 Timing Belt is an aftermarket replacement timing belt for select Yamaha F200, F225 and F250 four-stroke outboards. It replaces Yamaha OEM timing belt numbers 6P2-46241-00-00, 6P2-46241-01-00 and 6P2-46241-02-00.
Verified fitment includes standard and counter-rotation Yamaha 200HP, 225HP and 250HP applications, including multiple XA, UA, TUR, TXR, BTUR and BTXR configurations.
OEM & Cross Reference Numbers
| Brand / Type | Part Number |
|---|---|
| Sierra | 18-15132 |
| Yamaha OEM | 6P2-46241-00-00 |
| Yamaha OEM | 6P2-46241-01-00 |
| Yamaha OEM | 6P2-46241-02-00 |
Yamaha Fitment
| Engine Family | Verified Applications |
|---|---|
| Yamaha F200 | F200XA, F200XA_0119, F200XA_011, F200XA_051 and related 2006 and later applications. |
| Yamaha LF200 | LF200XA, LF200XA_0119, LF200XA_01, LF200XA_0112_, LF200XA_05 and LF200XA_0511 applications. |
| Yamaha F225 | F225XA, F225XA-201, F225XA_011, F225XA_051 and F225TLR applications. |
| Yamaha F250 | F250XA, F250XA_011, F250UA, F250UA_011, F250TUR, F250TXR, F250BTUR and F250BTXR applications. |
| Yamaha LF250 Counter-Rotation | LF250XA, LF250XA_01, LF250UA, LF250UA_01, LF250TUR, LF250TXR, LF250BTUR and LF250BTXR applications. |
The supplied fitment includes select 2005 F250 / LF250 applications along with a broad range of 2006 and later F200, F225 and F250 four-stroke outboards.
Yamaha used different timing belts across similar horsepower families. Verify the complete engine model number and confirm that the original belt cross references 6P2-46241-00-00, 6P2-46241-01-00 or 6P2-46241-02-00 before ordering.
Timing Belt Tensioner
When servicing the timing belt, inspect the belt tensioner assembly at the same time. A worn, noisy or weak tensioner can reduce belt control and should be replaced if it is not operating correctly.
Yamaha Timing Belt Tensioner Assembly - 6P2-11590-05-00
The matching timing belt tensioner assembly for compatible Yamaha F200, F225 and F250 four-stroke applications.
If the tensioner shows wear, noise, binding or poor belt tension, it is a good idea to replace it while the timing belt is already being serviced.
What This Timing Belt Does
The timing belt synchronizes the crankshaft and camshafts so the engine's valves open and close at the correct time in relation to piston movement. Proper timing is critical for smooth operation and correct four-stroke combustion.
A worn, cracked, contaminated or damaged belt can lead to incorrect valve timing and potentially serious engine problems. The belt should be inspected during scheduled maintenance and replaced according to the engine's service requirements.
Common Signs the Timing Belt Needs Attention
- Visible cracking or deterioration
- Frayed belt edges
- Missing or damaged belt teeth
- Oil or other fluid contamination on the belt
- Abnormal noise from the timing belt area
- Loose belt tension
- Worn or noisy tensioner assembly
- Belt has reached its scheduled replacement interval
Why Inspect the Tensioner During Belt Replacement?
The timing belt and tensioner work together. Even a new belt can have shortened service life if the tensioner is worn, binding or unable to maintain proper tension.
Whenever the timing belt is replaced, inspect the 6P2-11590-05-00 tensioner assembly and related timing components before reassembly.
Key Features and Benefits
- Sierra aftermarket Yamaha timing belt
- Sierra part number 18-15132
- Replaces Yamaha 6P2-46241-00-00
- Replaces Yamaha 6P2-46241-01-00
- Replaces Yamaha 6P2-46241-02-00
- Fits select Yamaha F200 four-stroke outboards
- Fits select Yamaha F225 four-stroke outboards
- Fits select Yamaha F250 four-stroke outboards
- Fits select LF200 and LF250 counter-rotation models
- Coverage includes multiple XA, UA, TUR, TXR, BTUR and BTXR applications
- Matching timing belt tensioner linked above
FAQ
What Yamaha part numbers does Sierra 18-15132 replace?
It replaces Yamaha 6P2-46241-00-00, 6P2-46241-01-00 and
6P2-46241-02-00.
Does this fit Yamaha F200?
Yes. Verified applications include select F200XA and LF200XA model families
listed above.
Does it fit Yamaha F225?
Yes. Select F225XA and F225TLR applications are included.
Does this fit Yamaha F250?
Yes. The supplied fitment includes numerous F250XA, F250UA, F250TUR,
F250TXR, F250BTUR and F250BTXR applications.
Does it fit counter-rotation Yamaha engines?
Yes. Select LF200XA and LF250 XA / UA / TUR / TXR / BTUR / BTXR
counter-rotation applications are included.
Does this fit 2005 engines?
Yes. The supplied fitment specifically includes select
2005 F250TURD, F250TXRD, LF250TURD and LF250TXRD
applications.
What tensioner goes with this timing belt?
The compatible timing belt tensioner is
Yamaha 6P2-11590-05-00, linked above.
Should I replace the tensioner whenever I replace the belt?
Not automatically, but it should be inspected carefully. Replace the
tensioner if it shows excessive wear, noise, binding or inability to maintain
proper belt tension.
How should I confirm fitment?
Match your complete Yamaha engine model to the application list and confirm
that the original timing belt uses one of the listed
6P2-46241 OEM numbers.
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 Terms
18-15132, Sierra 18-15132, 6P2-46241, 6P2-46241-00-00, Yamaha 6P2-46241-00-00, 6P2-46241-01-00, Yamaha 6P2-46241-01-00, 6P2-46241-02-00, Yamaha 6P2-46241-02-00, Yamaha timing belt, Yamaha F200 timing belt, Yamaha F225 timing belt, Yamaha F250 timing belt, Yamaha LF200 timing belt, Yamaha LF250 timing belt, F200XA timing belt, F225XA timing belt, F225TLR timing belt, F250XA timing belt, F250UA timing belt, F250TUR timing belt, F250TXR timing belt, F250BTUR timing belt, F250BTXR timing belt, LF250TUR timing belt, LF250TXR timing belt, Yamaha four stroke timing belt, 6P2-11590-05-00, Yamaha timing belt tensioner
6P2-46241-00-00
6P2-46241-01-00
6P2-46241-02-00