Water Pump Repair Service Kit for Johnson/Evinrude 40–60 HP 2-Stroke Outboards
Water Pump Repair Service Kit for Johnson/Evinrude 40–60 HP 2-Stroke Outboards is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Water Pump Repair Service Kit for Johnson/Evinrude 40–60 HP 2-Strok...
Water Pump Repair Service Kit for Johnson/Evinrude 40–60 HP 2-Stroke Outboards is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Water Pump Repair Service Kit is designed for selected Johnson and Evinrude 2-stroke outboard engines in the 40–60 HP range. It is intended for servicing the engine cooling-water pump and replacing worn pump-service components to help restore proper water circulation and operating-temperature control.
Use the exact engine brand, horsepower, model information, year, and existing reference number to confirm fitment before ordering. The company fitment data for this product covers Johnson/Evinrude 40 HP engines from 1984–1985, 50 HP engines from 1979–1985, 55 HP engines from 1979–1985, and 60 HP engines from 1980–1985.
- Aftermarket replacement service kit for the water-pump cooling system.
- Suitable for selected Johnson/Evinrude 2-stroke outboards in the specified applications.
- Reference numbers are provided for identification and cross-reference purposes only.
- Confirm whether your original application requires a housing-equipped or non-housing configuration before installation; component configuration can vary by application and reference number.
Reference Number Matrix
The following numbers are listed by the product records as OEM or aftermarket reference numbers associated with this service kit. They are not a substitute for checking the complete engine application.
| Reference type | Brand | Reference number |
|---|---|---|
| OEM reference | Johnson/Evinrude/OMC | 0439077 |
| OEM reference | Johnson/Evinrude/OMC | 0390770 |
| OEM reference | Johnson/Evinrude/OMC | 0391635 |
| OEM reference | Johnson/Evinrude/OMC | 0396932 |
| OEM reference | Johnson/Evinrude/OMC | 0396933 |
| OEM reference | Johnson/Evinrude/OMC | 0777808 |
| OEM reference | Johnson/Evinrude/OMC | 0387216 |
| Aftermarket reference | Sierra Marine | 18-3378 |
| Aftermarket reference | Sierra Marine | 18-3380 |
| Aftermarket reference | Sierra Marine | 18-3385 |
| Aftermarket reference | Sierra Marine | 18-3399 |
| Aftermarket reference | SEI Marine | 96-365-01BK |
| Aftermarket reference | OBR | JE-204 |
| Aftermarket reference | Mallory Marine | 9-48207 |
| Aftermarket reference | GLM | 12210 |
Engine Compatibility
Fitment is limited to the following Johnson/Evinrude 2-stroke horsepower and year ranges recorded for this product. Model and serial-number coverage is not specified in the available company data, so verify the exact engine identification before purchase.
| Brand | Rated horsepower | Stroke | Model-year range |
|---|---|---|---|
| Johnson/Evinrude | 40 HP | 2-Stroke | 1984–1985 |
| Johnson/Evinrude | 50 HP | 2-Stroke | 1979–1985 |
| Johnson/Evinrude | 55 HP | 2-Stroke | 1979–1985 |
| Johnson/Evinrude | 60 HP | 2-Stroke | 1980–1985 |
Technical Specifications
- Product type
- Water pump repair service kit
- Application
- Selected Johnson/Evinrude 2-stroke outboard cooling-water pumps
- Rated horsepower
- 40–60 HP, according to the listed application ranges
- Configuration
- Verify the required housing configuration against the original pump and application before ordering
- Brand status
- Aftermarket replacement; not an OEM-manufactured part
What’s in the Box
The product is supplied as a water-pump service kit. The exact component configuration should be matched to the selected application and original reference number. Available cross-reference catalog data identifies service components such as an impeller, impeller plate, gaskets, seals, grommets, O-rings, and fasteners for related applications; do not assume that every listed component or a pump housing is included unless it is confirmed for the specific application.
Installation Notes
- Confirm the engine brand, horsepower, model, year, and existing water-pump reference number before beginning work.
- Disconnect the battery where applicable, remove the spark-plug leads, and place the outboard in a safe service position.
- Drain the gearcase lubricant if required by the manufacturer's lower-unit removal procedure.
- Remove the lower unit and carefully separate it from the midsection, taking care not to damage the water tube, shift linkage, or driveshaft components.
- Remove the water-pump cover and old service components. Note the impeller orientation and the location of the key, seals, grommets, and fasteners.
- Clean the mating surfaces and remove old gasket material, debris, and corrosion.
- Install the replacement service components in the correct order for the specific engine application. Use a new key where required and confirm that the impeller rotates in the correct direction.
- Reinstall the pump cover or housing and tighten fasteners to the engine manufacturer's specifications.
- Reinstall the lower unit, ensuring correct alignment of the driveshaft, shift linkage, and water tube.
- Refill the gearcase with the correct lubricant if it was drained.
- Test the engine only with an adequate water supply, such as a test tank or flushing device, and confirm a steady tell-tale stream before normal operation.
Troubleshooting & FAQ
How do I confirm that this service kit fits my outboard?
Match all available information: Johnson or Evinrude brand, 2-stroke configuration, horsepower, model year, and the original water-pump reference number. The listed ranges are 40 HP from 1984–1985, 50 HP from 1979–1985, 55 HP from 1979–1985, and 60 HP from 1980–1985. Horsepower alone is not sufficient to confirm fitment.
Does this product include a water-pump housing?
The company records describe this product as a water-pump service kit and reference both housing and non-housing service-kit configurations. Because the required configuration varies by application, compare the original pump and the applicable reference number before ordering rather than assuming that a housing is included.
What are common signs of a worn water-pump impeller?
Common symptoms include a weak or missing tell-tale stream, overheating, an overheating warning, or visible cracking, brittleness, distortion, or missing sections on the impeller. Stop operation if the engine overheats and inspect the cooling system before further use.
How often should the water-pump service components be replaced?
Replacement timing depends on service hours, storage conditions, water quality, and the manufacturer's maintenance schedule. Inspect the pump during scheduled maintenance and replace worn or damaged components promptly, especially after operation in saltwater, sandy water, or silty conditions.
Is this an OEM part?
No. This is an aftermarket replacement service kit. The OEM and aftermarket numbers shown on this page are reference numbers used to help identify the intended application.
What should I do if the original parts look different?
Do not force installation or modify the components. Stop and compare the engine model, year, reference number, pump configuration, and component dimensions with the original parts and the manufacturer's service information.
Safety & Important Information
- Verify the complete engine application and reference number before purchase.
- Do not operate an outboard without an adequate cooling-water supply.
- Follow the engine manufacturer's service procedures and torque specifications.
- Professional installation is recommended if you are not experienced with lower-unit or water-pump service.
- This is an aftermarket replacement and is not manufactured by Johnson, Evinrude, OMC, BRP, or the other reference-number brands listed above.
About Sea Sierra
- Marine Replacement Parts — Service components selected for common outboard maintenance applications.
- Application-Focused Listings — Product information is organized around engine type, horsepower, model year, and reference numbers.
- Practical Maintenance Support — Clear installation and verification guidance helps customers select the correct replacement part.
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