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Description
Water Pump Impeller Kit – Fits Johnson/Evinrude 35–60 HP (Replaces 439077, 396933)Water Pump Impeller Kit Fits Johnson Evinrude 3560 HP (Replaces 439077, 396933) This water pump impeller repair kit is designed for Johnson Evinrude 2 stroke outboard engines from 35 HP to 60 HP, covering models manufactured between 1979 and 1994, including commercial versions. It serves as a direct replacement for multiple OEM and aftermarket part numbers, including Johnson Evinrude 439077, 396933, 390770, 396932, 391635, and 777808, as well as
Water Pump Impeller Kit – Fits Johnson/Evinrude 35–60 HP (Replaces 439077, 396933)
This water pump impeller repair kit is designed for Johnson/Evinrude 2-stroke outboard engines from 35 HP to 60 HP, covering models manufactured between 1979 and 1994, including commercial versions.
It serves as a direct replacement for multiple OEM and aftermarket part numbers, including Johnson/Evinrude 439077, 396933, 390770, 396932, 391635, and 777808, as well as Sierra 18-3399 and Mallory 9-48204/9-48207.
- Includes a high-performance 6-blade neoprene impeller and marine-grade alloy housing.
- Provides a complete solution for replacing the entire water pump assembly.
- Engineered for direct OEM replacement to ensure proper fit and function.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 439077 |
| Johnson/Evinrude | 396933 |
| Johnson/Evinrude | 390770 |
| Johnson/Evinrude | 396932 |
| Johnson/Evinrude | 391635 |
| Johnson/Evinrude | 777808 |
| Sierra | 18-3399 |
| Mallory | 9-48204 |
| Mallory | 9-48207 |
Compatible Engine Models
Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson Serial Number Guide.
| Brand | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Johnson/Evinrude | 35 | 2-Stroke | 1986–1987 | 439077 | |
| Johnson/Evinrude | 40 | 2-Stroke | 1984–1988 | 439077 | Not for models with Lever Operated Gas Assist Tilt |
| Johnson/Evinrude | 45 | 2-Stroke | 1986–1994 | 439077 | |
| Johnson/Evinrude | 45 Commercial | 2-Stroke | 1986–1988, 1990–1994 | 439077 | |
| Johnson/Evinrude | 48 | 2-Stroke | 1987–1988 | 439077 | |
| Johnson/Evinrude | 50 | 2-Stroke | 1979–1988 | 439077 | Not for models with Lever Operated Gas Assist Tilt |
| Johnson/Evinrude | 55 | 2-Stroke | 1979–1981, 1983–1984, 1986–1994 | 439077 | |
| Johnson/Evinrude | 55 Commercial | 2-Stroke | 1986–1988, 1990–1994 | 439077 | |
| Johnson/Evinrude | 60 | 2-Stroke | 1979–1988 | 439077 | Not for models with Lever Operated Gas Assist Tilt |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Water Pump Impeller Kit with Housing |
| Installation | Direct OEM replacement |
| Housing Material | Marine-grade metal alloy, corrosion resistant |
| Housing Color | Silver/Gray |
| Other Technical Attributes | High-performance neoprene rubber impeller with 6 blades |
| Warranty | 1 year (JLM Marine, BARTOO, UANOFCN); may vary by vendor |
Package Contents
This kit includes the following components:
- 1 x Water Pump Housing (384087)
- 1 x Impeller (396809)
- 1 x Wear Plate (320981)
- 1 x Gasket (336530)
- 1 x O-Ring (303059)
- 1 x Grommet (315837)
- 2 x Screw, Short (319126)
- 2 x Screw, Long (909533)
- 1 x Seal (315748)
- 1 x Pump Cup/Liner (320775)
- 1 x Water Tube Guide/Bracket (315838)
- 1 x Grommet, Housing (341732)
- 1 x Key (331901)
- 1 x Key (344470)
Installation Guide
- Disconnect Power: Disconnect the battery and shift the outboard into neutral.
- Access Lower Unit: Remove the bolts securing the lower unit (gearcase) to the upper driveshaft housing.
- Separate Gearcase: Carefully lower and separate the gearcase to expose the water pump assembly.
- Remove Old Pump: Unbolt and remove the old water pump housing, impeller, and wear plate. Take note of the blade direction of the old impeller.
- Clean Surfaces: Thoroughly clean the mating surfaces on the gearcase and driveshaft, removing any old gasket material or debris.
- Install New Components: Place the new gasket and wear plate onto the gearcase. Install the new impeller key onto the driveshaft.
- Install New Impeller: Slide the new impeller onto the driveshaft. Turn the shaft clockwise while pushing down to correctly orient the blades inside the new housing cup/liner.
- Secure New Housing: Place the new housing over the impeller assembly and secure it with the provided screws, tightening them evenly.
- Reassemble: Re-install the gearcase, ensuring the water tube, shift rod, and driveshaft are properly aligned.
- Final Tightening: Tighten all gearcase bolts to the manufacturer's specified torque.
- Test Operation: Reconnect the battery and test the engine in a suitable water source, confirming a strong, steady stream from the tell-tale outlet.
Troubleshooting & FAQ
Q: How can I be sure this kit fits my Johnson/Evinrude engine?
A: This kit is for specific Johnson/Evinrude 35–60 HP 2-stroke models from 1979–1994. Please check the "Compatible Engine Models" table and cross-reference your engine's model, horsepower, and year. Note the exclusions for certain models with a "Lever Operated Gas Assist Tilt."
Q: What are the signs my water pump needs to be replaced?
A: Common signs of a failing impeller include a weak or non-existent water stream from the engine's tell-tale outlet, engine overheating alarms, or a melted plastic water pump housing.
Q: How often should I replace the water pump impeller?
A: For preventative maintenance, it is recommended to inspect and replace the water pump impeller every 1-2 years or every 100-200 hours of operation, especially if you frequently operate in saltwater or debris-heavy water.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5–15 days.
- Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy