Fuel Pump Kit – Fits Mercruiser V6 235 HP (Replaces 393103, 878962)
Fuel Pump Kit – Fits Mercruiser V6 235 HP (Replaces 393103, 878962) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Fuel Pump Kit – Fits Mercruiser V6 235 HP (Replaces 393103, 878962)
Product Details
This Fuel Pump Kit – Fits Mercruiser V6 235 HP is engineered for Mercruiser V6 235 HP engines, ensuring reliable fuel delivery for optimal engine performance. The kit contains all necessary gaskets and components to repair or rebuild the original fuel pump assembly, restoring its function and preventing leaks.
It serves as a direct replacement for Mercruiser 878962, OMC 393103, and interchanges with aftermarket parts including Sierra 18-7820 and GLM 40820.
- Engine-mounted installation for a direct fit.
- Includes all essential gaskets and diaphragms for a complete rebuild.
- Designed for gasoline-fueled marine engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercruiser | 878962 |
| OMC | 0393103 / 393103 |
| Sierra | 18-7820 |
| GLM | 40820 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercruiser owners, this repair kit is specified for the V6 235 HP model with a mechanical fuel pump.
For OMC, Evinrude, and Johnson owners, the kit fits a wide range of outboard models from 1982 to 1984. Please verify your specific model and year for an exact match.
| Brand | Model | Rated HP | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Mercruiser | V6 235 | 235 | 878962 | Mechanical fuel pump repair kit | |
| Evinrude | E150TRXCNM | 150 | 1982 | 393103 | Fuel pump |
| Evinrude | E35RCTS | 35 | 1983 | 393103 | Fuel pump |
| Evinrude | E70ELCTE | 70 | 1983 | 393103 | Fuel pump |
| Evinrude | E200TRLCTD | 200 | 1983 | 393103 | Fuel pump |
| Evinrude | E75TRLCTE | 75 | 1983 | 393103 | Fuel pump |
| Evinrude | E75ELCRD | 75 | 1984 | 393103 | Fuel pump |
| Evinrude | E75TRLCNB | 75 | 1982 | 393103 | Fuel pump |
| Evinrude | E75ERLCTE | 75 | 1983 | 393103 | Fuel pump |
| Evinrude | E40RWLCRA | 40 | 1984 | 393103 | Fuel pump |
| Evinrude | E115TXCNB | 115 | 1982 | 393103 | Fuel pump |
| Evinrude | E35RLCND | 35 | 1982 | 393103 | Fuel pump |
| Evinrude | E235TRLCNE | 235 | 1982 | 393103 | Fuel pump |
| Evinrude | Various models | 25-235 | 1982–1984 | 393103 | Multiple applications |
| Johnson | Various models | 235 | 1982–1983 | 393103 | Multiple applications |
Technical Specs
- Product Type
- Fuel Pump Repair Kit
- Installation
- Engine-mounted
- Fuel Type
- Gasoline
- Dimensions
- L: 15.5 cm × W: 10.0 cm × H: 1.0 cm
- Weight
- 0.02 kg (0.04 lbs)
What’s in the Box
- Fuel Pump Diaphragm
- Gaskets
- Screen/Filter elements
- Other rebuild components
Installation Notes
- Disconnect the battery and relieve any pressure from the fuel system.
- Carefully disconnect the fuel inlet and outlet lines from the pump. Have rags ready to catch any spilled fuel.
- Remove the mounting bolts securing the old fuel pump to the engine block.
- Carefully remove the pump and the old gasket. Clean the mounting surface on the engine thoroughly.
- Disassemble the fuel pump and replace the old diaphragm, gaskets, and other components with the new parts from the kit.
- Reassemble the fuel pump housing securely.
- Place the new gasket onto the engine block and mount the rebuilt fuel pump. Tighten the bolts to the manufacturer's specified torque.
- Reconnect the fuel lines to the pump.
- Reconnect the battery. Before starting the engine, prime the fuel system and carefully check for any leaks around the pump and fuel line connections.
Troubleshooting & FAQ
What engines does this fuel pump kit fit?
This kit is specifically designed for the Mercruiser V6 235 HP engine but also fits a wide variety of OMC, Evinrude, and Johnson outboard models ranging from 25 HP to 235 HP, typically from the years 1982–1984.
What are the signs of a failing fuel pump?
Common symptoms include the engine sputtering at high speeds, loss of power, difficulty starting, or engine stalling. A visual inspection might reveal fuel leaks from the pump housing or degraded gaskets.
Is this a complete kit for a full rebuild?
Yes, this kit contains the core components (diaphragm, gaskets, screen) required to rebuild a compatible mechanical fuel pump. Please verify the contents against your specific pump model's needs before starting.
How can I confirm this part is correct for my engine?
The best way is to match your existing part number to one of the cross-references in our Part Number Matrix (e.g., Mercruiser 878962, OMC 393103). Additionally, check your engine model and year against our compatibility table.
How often should a mechanical fuel pump be rebuilt?
There is no fixed interval, but it's good practice to inspect the fuel pump for leaks or performance issues during regular seasonal maintenance. The internal diaphragms can degrade over time, especially with modern ethanol-blended fuels.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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