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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.
818290A8
818290T8
15081A93
15081A94
15081A95
809837A96
809837A97
809837A98
809837R96
809837R97
809837T97
74036
8M0169589
8154371
878409A1
OEM Mercury Driveshaft Oil Seal Carrier
Mercury 2.5L & 3.0L EFI / DFI Gearcase Seal Carrier
This genuine OEM Mercury driveshaft oil seal carrier fits select Mercury 2.5L and 3.0L EFI and DFI outboards using compatible gearcase assemblies.
The seal carrier supports the driveshaft sealing system in the upper gearcase area to help retain gear lube and prevent water intrusion into the lower unit.
Compatible Applications
| Engine Family | Engine Type | Application | Application Notes |
|---|---|---|---|
| Mercury 2.5L | EFI Outboards | Gearcase Driveshaft Seal Area | Select high-performance lower units |
| Mercury 2.5L | DFI Outboards | Gearcase Driveshaft Seal Area | Select OptiMax applications |
| Mercury 3.0L | EFI Outboards | Gearcase Driveshaft Seal Area | Select EFI lower units |
| Mercury 3.0L | DFI Outboards | Gearcase Driveshaft Seal Area | Select OptiMax and DFI applications |
| Alpha One Gen II | Sterndrive | Upper Gear Housing | Select sterndrive applications |
Always verify your engine serial number and gearcase application before ordering lower unit sealing components.
OEM Part Numbers & Cross References
| Type | Part Number |
|---|---|
| Current Mercury OEM Number | 8M0214948 |
| Mercury Cross Reference | 807929A1 |
| Mercury Cross Reference | 807929A2 |
| Mercury Cross Reference | 815922A1 |
| Mercury Cross Reference | 815922A5 |
| Mercury Cross Reference | 821759A1 |
| Mercury Cross Reference | 821759A2 |
| Mercury Cross Reference | 821759A3 |
| Mercury Cross Reference | 821759A4 |
| Pro Marine Part Number | 65354P |
What This Driveshaft Oil Seal Carrier is Used For
This Mercury driveshaft oil seal carrier is installed in the upper area of compatible outboard gearcases and sterndrive gear housings.
The carrier supports the driveshaft oil seals and sealing surfaces while helping prevent water intrusion and gear lube leakage.
Corrosion, seal wear, damaged sealing surfaces, or improper installation can contribute to lower unit leaks and gearcase contamination.
Seal carriers are commonly replaced during lower unit rebuild service, driveshaft resealing, or when corrosion damages the seal bore area.
Key Features and Benefits
- Genuine OEM Mercury driveshaft oil seal carrier
- Fits select Mercury 2.5L and 3.0L EFI / DFI outboards
- Also fits select Alpha One Gen II sterndrive applications
- Supports proper driveshaft seal alignment
- Helps prevent water intrusion into the lower unit
- Helps retain gear lube inside the gearcase
- Common replacement during lower unit rebuild service
- OEM Mercury fit and sealing compatibility
Driveshaft Seal Carrier Details
- Brand: Mercury Marine
- Part Type: Driveshaft Oil Seal Carrier
- Current OEM Number: 8M0214948
- Cross References: 807929A1, 807929A2, 815922A1, 815922A5, 821759A1, 821759A2, 821759A3, 821759A4
- Applications: Mercury 2.5L & 3.0L EFI / DFI Outboards
- System: Lower Unit / Gearcase
- Use: Driveshaft sealing and gearcase reseal service
FAQ
What engines does this seal carrier fit?
This carrier fits select Mercury 2.5L and 3.0L EFI and DFI outboards along with certain Alpha One Gen II applications.
What does a driveshaft seal carrier do?
The seal carrier supports the driveshaft oil seals and helps prevent water intrusion and gear lube leakage inside the lower unit.
Why would this part need replacement?
Common causes include corrosion, damaged sealing surfaces, water intrusion, or lower unit rebuild service.
Does this replace older Mercury assemblies?
Yes. This carrier replaces several earlier Mercury part numbers including 807929A1, 815922A5, and 821759A4.
Should the lower unit be pressure tested after installation?
Yes. Pressure and vacuum testing is recommended after seal service to verify proper sealing.
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.
- Lower unit sealing components should be installed only after proper inspection and diagnosis.
- 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
65354P, 8M0214948, 807929A1, 807929A2, 815922A1, 815922A5, 821759A1, 821759A2, 821759A3, 821759A4, Mercury seal carrier, driveshaft oil seal carrier, Mercury 2.5L seal carrier, Mercury 3.0L seal carrier, Mercury EFI lower unit seal, Mercury DFI gearcase seal carrier, Mercury OptiMax seal carrier, Alpha One Gen II seal carrier
807929A1
807929A2
815922A1
815922A5
821759A1
821759A2
821759A3
821759A4
859129
896963
90099
813769
835083
