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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.
414751
414752
414753
414754
414755
414756
414757
414758
892158
92331
6G5-11642-00-94
6K7-11642-01-093
6R5-11642-01-93
90109-09M60-00
90109-09M62-00
90109-09001-00
6K7-11631-01-093
6R5-11631-01-93
3B7010240M
3B7010242
3B7010242M
3B7010050M
3B7010051
3B7010051M
414993
414994
414995
892157
Sierra 18-2716 Exhaust Cover Gasket
The Sierra 18-2716 Exhaust Cover Gasket is a replacement gasket designed for Mercury 2-cylinder 2-stroke outboards. This gasket seals the exhaust cover to the engine block, preventing exhaust and water leaks while maintaining proper engine performance.
Fitment Overview
This gasket replaces Mercury OEM part numbers 414991, 41499, and 92332. These OEM numbers are used across Mercury 2-cylinder outboards in the 15HP through 25HP range, including standard and commercial-duty models.
OEM diagram lookup confirms this gasket is used on multiple engine variations that share the same exhaust cover design and mounting pattern.
Compatibility
| Brand | Model | Engine Type |
|---|---|---|
| Mercury | 15 HP / Super 15 | 2-Cylinder 2-Stroke |
| Mercury | 18XD | 2-Cylinder 2-Stroke |
| Mercury | 20 HP / 20XD / 20 Jet | 2-Cylinder 2-Stroke |
| Mercury | 25 HP / 25XD | 2-Cylinder 2-Stroke |
| Mercury | 15 / 25 Sea Pro | 2-Cylinder 2-Stroke |
| Mercury | 15 / 25 Marathon | 2-Cylinder 2-Stroke |
These engines share a common exhaust cover design where this gasket is used.
Example Model Applications
- Mercury 15HP and Super 15 outboards
- Mercury 18XD models
- Mercury 20HP, 20XD, and 20 Jet models
- Mercury 25HP and 25XD outboards
- Mercury Sea Pro and Marathon commercial models
These are common applications. Always verify using your OEM part number or engine diagram.
Fits These Serial Ranges
This gasket is used across multiple Mercury 2-cylinder engine generations and does not follow a single serial-number break.
Important: Confirm compatibility by matching your existing gasket to 414991, 41499, or 92332.
Looking for the OEM Mercury version of this gasket?
View OEM Mercury Exhaust Cover Gasket 414991
Part Numbers and Cross References
| Type | Part Number |
|---|---|
| Sierra | 18-2716 |
| Mercury OEM | 414991 |
| Mercury OEM | 41499 |
| Mercury OEM | 92332 |
What This Part Is Used For
This gasket seals the exhaust cover to the engine block, preventing exhaust gas and cooling water leaks while maintaining proper engine function.
- Seals exhaust cover to engine block
- Prevents exhaust and water leaks
- Maintains proper cooling flow
- Supports overall engine efficiency
A failed gasket can lead to exhaust leakage, overheating, or reduced engine performance.
System Function and Connections
- System Type: Exhaust system
- Component Type: Exhaust cover gasket
- Location: Between exhaust cover and engine block
FAQ
What engines does this gasket fit?
It fits Mercury 15HP through 25HP 2-cylinder 2-stroke outboards, including commercial models.
What does this replace?
It replaces Mercury part numbers 414991, 41499, and 92332.
Does this fit Sea Pro or Marathon models?
Yes, it fits Sea Pro and Marathon versions using this exhaust cover design.
How do I confirm fitment?
Match your existing gasket to the OEM numbers or verify using your engine diagram.
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 Part Numbers
18-2716, 414991, 41499, 92332, Mercury 25HP gasket, Mercury 2-cylinder exhaust gasket
414991
92332
3B7000040M
3B7000041
3B7000041M
3B7000042
3B7000042M
3B7000043
3B7000043M