Fuel Pump Assembly for Johnson/Evinrude 6–15 HP 2-Stroke Outboards – Replaces 397839, 391638, 395091, 397274
Fuel Pump Assembly for Johnson/Evinrude 6–15 HP 2-Stroke Outboards – Replaces 397839, 391638, 395091, 397274 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 Assembly for Johnson/Evinrude 6–15 HP 2-Stroke Outboards ...
Fuel Pump Assembly for Johnson/Evinrude 6–15 HP 2-Stroke Outboards – Replaces 397839, 391638, 395091, 397274 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket fuel pump assembly is designed for selected Johnson and Evinrude 2-stroke outboard engines rated at 6, 8, 9.9, and 15 HP from model years 1981–1992. It is intended to restore dependable pulse-operated fuel delivery when the original pump is worn, leaking, or no longer supplying fuel correctly.
Use the original pump configuration, engine model, horsepower, and year to confirm compatibility before ordering. The assembly is listed as a replacement for Johnson/Evinrude OMC part numbers 397839, 391638, 395091, and 397274. Sierra reference 18-7350 is also associated with these replacement numbers.
- Replacement fuel pump for selected Johnson/Evinrude 2-stroke outboards.
- Pulse-driven diaphragm design for engine fuel delivery.
- Designed for installation in the original fuel-pump location.
- Compare the pump body, hose routing, fittings, and mounting arrangement with the original part before installation.
Part Number Matrix
The following references are documented for this replacement application. Part-number matching should be combined with the complete engine fitment conditions below.
| Brand | Part Number | Reference Type |
|---|---|---|
| Johnson/Evinrude OMC | 397839 | Replacement reference |
| Johnson/Evinrude OMC | 391638 | Replacement reference |
| Johnson/Evinrude OMC | 395091 | Replacement reference |
| Johnson/Evinrude OMC | 397274 | Replacement reference |
| Sierra | 18-7350 | Aftermarket reference |
Engine & Model Compatibility
Catalog fitment for the corresponding fuel-pump application is limited to the following combined horsepower, stroke, and year conditions. “Various” indicates that the source fitment is grouped by engine rating rather than a single model designation.
| Brand | Model | Rated HP | Stroke | Years | Replacement Reference | Notes |
|---|---|---|---|---|---|---|
| Johnson/Evinrude | Various | 6 | 2-Stroke | 1981–1992 | 397839 / 18-7350 | Confirm the exact engine model and original pump. |
| Johnson/Evinrude | Various | 8 | 2-Stroke | 1981–1992 | 397839 / 18-7350 | Confirm the exact engine model and original pump. |
| Johnson/Evinrude | Various | 9.9 | 2-Stroke | 1981–1992 | 397839 / 18-7350 | Confirm the exact engine model and original pump. |
| Johnson/Evinrude | Various | 15 | 2-Stroke | 1981–1992 | 397839 / 18-7350 | Confirm the exact engine model and original pump. |
Technical Specifications
- Product Type
- Fuel pump assembly
- Application
- Selected Johnson/Evinrude 2-stroke outboard engines
- Rated Engine Range
- 6, 8, 9.9, and 15 HP
- Documented Model Years
- 1981–1992
- Fuel Type
- Gasoline
- Pump Mechanism
- Pulse-driven diaphragm type
- Connection
- Fuel-line and pulse-hose connections; verify hose routing against the original pump
- Installation
- Replacement installation at the original fuel-pump mounting location
What’s in the Box
- 1 x Fuel pump assembly
- 2 x Mounting straps or bands
- 1 x Fuel-pump gasket
Compare all package components with the product photos and your original installation before beginning work. The related Sierra service listing identifies a separate fuel-pump kit reference for this application; that reference should not be treated as an additional included item unless specifically shown in the package.
Installation Notes
- Stop the engine, disconnect the battery where applicable, and work in a well-ventilated area away from sparks or open flame.
- Place an absorbent rag below the pump and manage any fuel that may spill when the hoses are removed.
- Label or photograph the inlet, outlet, and pulse-hose connections before disconnecting them.
- Remove the original pump from its mounting straps or fasteners.
- Clean the mounting area and replace the gasket with the supplied gasket.
- Install the replacement pump in the original orientation and secure it with the mounting straps or fasteners.
- Reconnect each hose to the correct fitting and check that the connections are fully seated.
- Prime the fuel system according to the engine manufacturer’s procedure, inspect for leaks, and verify proper operation before normal use.
Troubleshooting & FAQ
How do I confirm that this fuel pump fits my engine?
Confirm all of the following: Johnson or Evinrude brand, 2-stroke configuration, 6, 8, 9.9, or 15 HP rating, model year from 1981 through 1992, and a matching replacement reference such as 397839, 391638, 395091, or 397274. Also compare the pump body, fittings, hose routing, and mounting arrangement with your original part.
Does this fit 25 HP Johnson/Evinrude engines?
The documented fitment for this fuel-pump application covers 6, 8, 9.9, and 15 HP engines from 1981–1992. 25 HP engines are not included in the confirmed fitment range shown here.
What are common signs of a failing fuel pump?
Possible symptoms include hard starting, sputtering, stalling under load, loss of power, inconsistent fuel delivery, or fuel leakage around the pump. Diagnose the fuel system before replacing the pump.
Is a gasket included?
Yes. This package includes one fuel-pump gasket along with the fuel pump and two mounting straps or bands.
Is this an OEM part?
This is an aftermarket replacement fuel pump assembly. Johnson/Evinrude and OMC numbers shown on this page are reference numbers used for identification and compatibility.
How often should the fuel pump be replaced?
There is no universal replacement interval. Inspect the pump during routine maintenance and replace it if it leaks, shows visible damage, or no longer provides reliable fuel delivery.
How fast is shipping?
Available shipping methods and delivery estimates are displayed at checkout and may vary by destination and service selected.
Safety & Important Information
- Verify the complete engine fitment conditions and compare the replacement pump with the original part before purchase.
- Fuel-system work should be performed with the engine off, in a well-ventilated area, and away from ignition sources.
- After installation, check every fuel connection for leaks before operating the engine.
- Professional installation is recommended if you are not experienced with outboard fuel systems.
About Sea Sierra
- Marine Replacement Parts — Practical replacement components for outboard maintenance and repair.
- Fitment-Focused Listings — Product references and engine conditions are provided to help you compare the replacement with your original part.
- Support for Installation Planning — Review the compatibility details and package contents before beginning service.
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