Fuel Pump – Fits Johnson/Evinrude 4.5–15 HP 2-Stroke Outboards (Replaces 397839)
Fuel Pump – Fits Johnson/Evinrude 4.5–15 HP 2-Stroke Outboards (Replaces 397839) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Fuel Pump – Fits Johnson/Evinrude 4.5–15 HP 2-Stroke Outboards (Rep...
Fuel Pump – Fits Johnson/Evinrude 4.5–15 HP 2-Stroke Outboards (Replaces 397839) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket fuel pump is designed for selected Johnson/Evinrude outboard motors in the 4.5–15 HP range. The documented application is for 2-stroke outboards manufactured from 1970 through 1992, including selected 6 HP, 8 HP, 9.9 HP, and 15 HP OMC/BRP Marine applications.
This pump is supplied as a single replacement fuel-pump assembly. It is intended to replace the applicable original pump when the engine model, year, mounting arrangement, fuel-line connections, and original part number match.
- Aftermarket replacement for selected Johnson/Evinrude outboard applications.
- Designed for 2-stroke outboard fuel systems.
- Applicable power range: 4.5–15 HP, subject to the specific engine model and year.
- Single fuel-pump assembly; additional installation parts are not specified as included.
Part Number References
Use the following manufacturer and aftermarket references to compare with the pump being replaced. Part-number references do not replace model-specific fitment verification.
| Brand or Reference Type | Part Number |
|---|---|
| Johnson/Evinrude | 397839 |
| Johnson/Evinrude | 397274 |
| Johnson/Evinrude | 395091 |
| Johnson/Evinrude | 391638 |
| Sierra aftermarket reference | 18-7350 |
| Mallory aftermarket reference | 9-35350 |
Engine & Model Compatibility
The company fitment information identifies this pump for selected OMC/BRP Marine Johnson/Evinrude applications. Keep the horsepower, stroke, year, and original part number together when confirming compatibility.
| Brand | Application | Rated HP | Stroke | Years | Reference Part Numbers | Fitment Notes |
|---|---|---|---|---|---|---|
| Johnson/Evinrude | Selected OMC/BRP Marine outboards | 4.5–15 HP | 2-Stroke | 1970–1992 | 397839, 397274, 395091, 391638 | Verify the specific model and original pump before ordering. |
| Johnson/Evinrude | Selected small outboard applications | 6 HP, 8 HP, 9.9 HP, 15 HP | 2-Stroke | 1970–1992 | 397839, 397274, 395091, 391638 | Application coverage depends on the exact engine model and year. |
Not documented for this product: 4-stroke engines, 20 HP or 25 HP applications, or Mercury-specific applications. Do not use this listing for those applications without separate, model-specific confirmation.
Technical Specifications
- Product Type
- Outboard engine fuel pump
- Product Configuration
- Single replacement fuel-pump assembly
- Application
- Selected Johnson/Evinrude and OMC/BRP Marine outboards
- Engine Type
- 2-stroke outboards
- Rated Horsepower
- 4.5–15 HP, subject to model-specific fitment
- Documented Years
- 1970–1992
- Fuel
- Gasoline outboard fuel systems
- Replacement Type
- Aftermarket replacement
What’s in the Box
- 1 x Fuel pump assembly
Gaskets, cable ties, fuel hose, clamps, and other installation hardware are not specified as included. Reuse or purchase installation parts only after confirming the requirements of the specific engine.
Installation Notes
- Disconnect the battery, place the engine in a well-ventilated area, and allow the engine to cool.
- Shut off the fuel supply and follow the engine manufacturer's procedure for relieving fuel-system pressure.
- Identify and mark the fuel-line connections before removing the original pump.
- Remove the original pump and inspect the mounting surface, fuel lines, fittings, and mounting hardware.
- Compare the replacement pump with the original part, including mounting points, ports, and hose routing.
- Install any required gasket or seal specified by the engine service documentation; no gasket is specified as included with this product.
- Mount the replacement pump and tighten fasteners according to the engine manufacturer's service specifications.
- Reconnect the fuel lines to the correct fittings and secure them properly.
- Prime the fuel system, inspect all connections for leaks, and confirm correct operation before normal use.
Troubleshooting & FAQ
How do I confirm that this fuel pump fits my engine?
Confirm that your engine is a Johnson/Evinrude or OMC/BRP Marine 2-stroke outboard in the documented 4.5–15 HP range and within the 1970–1992 application period. Then compare the original pump, mounting arrangement, fuel-line connections, and reference numbers such as 397839, 397274, 395091, or 391638. Exact model and year verification is recommended before ordering.
Is this pump for 2-stroke or 4-stroke engines?
This listing is for documented 2-stroke Johnson/Evinrude applications. A 4-stroke application is not documented for this product.
Does this pump fit 20 HP or 25 HP engines?
The company fitment information documents applications up to 15 HP. Compatibility with 20 HP or 25 HP engines is not established for this product.
Is a gasket included?
No gasket is specified as included. Check the engine service documentation and compare the original installation before ordering any required gasket or seal.
What are common signs of a failing outboard fuel pump?
Possible symptoms include hard starting, stalling, hesitation, loss of power, surging, or poor operation at higher engine speed. Fuel-line leaks, tank-vent problems, filters, carburetor issues, and ignition faults can cause similar symptoms, so diagnose the complete fuel system before replacing the pump.
Is this an OEM part?
This listing is for an aftermarket replacement fuel pump, not an original equipment manufacturer part.
Safety & Important Information
- Work only in a well-ventilated area away from flames, sparks, and other ignition sources.
- Fuel is flammable. Clean spilled fuel immediately and follow all applicable safety procedures.
- Verify the engine model, year, stroke, horsepower, original part number, mounting points, and hose connections before purchase.
- Do not assume compatibility based only on horsepower; model-specific variations may exist.
- Professional installation is recommended when the correct fuel-system procedure or torque specification is unavailable.
About Sea Sierra
- Marine Replacement Parts — Replacement components for selected outboard and marine applications.
- Fitment-Focused Listings — Use the documented model, year, horsepower, stroke, and part-number information to select the correct component.
- Practical Support — Compare the original component and consult the engine service documentation before installation.
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