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Mercury Outboard Parts
Shop OEM and aftermarket Mercury outboard parts for maintenance, repair, troubleshooting, and complete engine rebuild projects. Browse Mercury marine parts by system, including cooling, fuel delivery, electrical and ignition, internal engine components, lower unit parts, steering, trim, and routine service items.
Pro Marine USA carries Mercury outboard engine parts for a wide range of 2-stroke, FourStroke, EFI, Optimax, Pro XS, SeaPro, and Verado applications. Use your engine horsepower, model, serial number, or OEM part number whenever possible to confirm fitment before ordering.
Shop Mercury 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
- Wizard Performance Parts
Find the Correct Mercury Outboard Part
Mercury outboard parts can vary by horsepower, engine family, model year, and serial number range. If you are unsure which component fits your engine, use the OEM parts lookup to locate the original Mercury part number from an engine diagram.
Once you have the OEM part number, search Pro Marine to find available genuine Mercury and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Mercury Outboard Engine Families
Pro Marine supports many Mercury outboard applications across a wide horsepower range. Always confirm the engine serial number and model information before ordering parts.
- Portable and Midrange: Mercury 2.5HP through 60HP 2-stroke and FourStroke applications
- FourStroke and EFI: common 75HP through 300HP Mercury EFI and FourStroke platforms
- Pro XS: performance-oriented Mercury Pro XS outboards across multiple engine families
- Optimax: direct-injected 2-stroke Mercury Optimax engines, commonly 75HP through 250HP
- Verado: supercharged and naturally aspirated Mercury Verado applications from 135HP through current high-horsepower platforms
- SeaPro: commercial-duty Mercury SeaPro outboards used in professional and high-hour applications
Common Mercury Outboard Repair Areas
- Overheating: inspect the water pump, impeller, thermostat, poppet valve, cooling passages, and related cooling components.
- Hard starting or rough running: inspect fuel pumps, filters, injectors or carburetors, spark plugs, coils, sensors, and intake components.
- No spark or intermittent ignition: check ignition coils, stators, switch boxes, trigger assemblies, sensors, grounds, and wiring.
- Low compression or power loss: inspect pistons, rings, cylinders, bearings, gaskets, reeds, and internal engine components.
- Lower unit noise or water intrusion: inspect seals, bearings, gears, shafts, bearing carriers, and gear lube condition.
- Trim or steering problems: inspect trim motors, pumps, hydraulic components, steering cylinders, hoses, and related rigging parts.
Why Buy Mercury Outboard Parts from Pro Marine USA?
- OEM Mercury and aftermarket replacement options for many common applications.
- Parts for maintenance, repair, engine rebuilding, lower units, electrical systems, fuel systems, steering, trim, and rigging.
- OEM diagram and part-number lookup tools to help identify the correct part before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large inventory of Mercury service parts and hard-to-find marine engine components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Mercury outboard part?
Use the engine horsepower, model, serial number, and year whenever available. Mercury frequently uses serial-number ranges to identify engine families, so the serial number is often the most reliable way to confirm fitment.
Can I search Mercury parts by OEM part number?
Yes. Enter the Mercury OEM part number 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.
Do Mercury outboard parts vary by serial number?
Yes. Many Mercury components change by serial-number range even within the same horsepower or model family. Always compare the serial range listed for the part with your engine before ordering.
Do you carry parts for Mercury Optimax and Verado engines?
Yes. Pro Marine carries parts for many Mercury Optimax, Verado, Pro XS, EFI, FourStroke, and SeaPro applications, including maintenance, fuel, electrical, cooling, internal engine, lower unit, steering, and rigging components.
Do you carry both OEM and aftermarket Mercury parts?
Yes. Pro Marine offers genuine Mercury parts along with aftermarket replacement parts for many common Mercury outboard maintenance, repair, and rebuild applications.
What Mercury outboard 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 manufacturer-specific service kit components.
Fitment Tip: Mercury outboard parts often vary by serial-number range. Confirm your engine serial number and OEM part number whenever possible before ordering.
9738A8
9738T10
9737A4
9737T4
9738A4
9738T4
414751
414752
414753
414754
414755
414756
414757
414758
892158
92331
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
850026T1
9-53204
