Water Pump Impeller with Key for Evinrude/Johnson 20–35 HP Outboards – Replaces 0395289, 0777818, 0395265
Water Pump Impeller with Key for Evinrude/Johnson 20–35 HP Outboards – Replaces 0395289, 0777818, 0395265 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 Impeller with Key for Evinrude/Johnson 20–35 HP Outboard...
Water Pump Impeller with Key for Evinrude/Johnson 20–35 HP Outboards – Replaces 0395289, 0777818, 0395265 is backordered and will ship as soon as it is back in stock.
Product Details
This water pump impeller with key is a replacement cooling-system component for listed Evinrude and Johnson outboard motors from 20 HP through 35 HP. The impeller is supplied with the drive key needed for installation and is intended to restore water-pump circulation when the original impeller is worn, cracked, hardened, or damaged.
The company-listed fitment covers Evinrude 20 HP, 25 HP, 28 HP, 30 HP, and 35 HP outboards, along with corresponding Johnson 20 HP, 25 HP, 28 HP, 30 HP, and 35 HP applications. Because fitment varies by horsepower, brand, and model year, verify the engine model and original part number before ordering.
- Replacement water pump impeller supplied with a drive key.
- Designed for listed Evinrude and Johnson outboard applications.
- Helps maintain cooling-water circulation through the outboard cooling system.
- Aftermarket replacement component; not an original equipment manufacturer part.
Part Number Matrix
Use these manufacturer and aftermarket references to compare the replacement with the part being removed. Number references are provided for identification and cross-reference purposes only.
| Brand or Source | Part Number | Reference Type |
|---|---|---|
| Evinrude / Johnson / OMC / BRP | 0395289 | OEM reference |
| Evinrude / Johnson / OMC / BRP | 0777818 | OEM reference |
| Evinrude / Johnson / OMC / BRP | 0395265 | OEM reference |
| Evinrude / Johnson / OMC / BRP | 395289 | OEM reference format |
| Evinrude / Johnson / OMC / BRP | 777818 | OEM reference format |
| Evinrude / Johnson / OMC / BRP | 395265 | OEM reference format |
| Impeller key | 0344470 | Key reference |
| SEI Marine | 96-362-03, 96-362-03E | Aftermarket reference |
| OBR Red Rhino | JE-209 | Aftermarket reference |
| Mallory Marine | 9-45200 | Aftermarket reference |
| GLM | 89750 | Aftermarket reference |
| Sierra Marine | 18-3051 | Aftermarket reference |
Engine & Model Compatibility
The following applications are listed by the company for this impeller and key assembly. Keep the horsepower, brand, and model-year conditions together when checking fitment.
| Brand | Rated HP | Listed Model Years | OEM References |
|---|---|---|---|
| Evinrude | 20 HP | 1985–1997 | 0395289, 0777818, 0395265 |
| Evinrude | 25 HP | 1979–1998 | 0395289, 0777818, 0395265 |
| Evinrude | 28 HP | 1985–1996 | 0395289, 0777818, 0395265 |
| Evinrude | 30 HP | 1980–1998 | 0395289, 0777818, 0395265 |
| Evinrude | 35 HP | 1978–1998 | 0395289, 0777818, 0395265 |
| Johnson | 20 HP | 1985–1997 | 0395289, 0777818, 0395265 |
| Johnson | 25 HP | 1979–2005 | 0395289, 0777818, 0395265 |
| Johnson | 28 HP | 1985–1995 | 0395289, 0777818, 0395265 |
| Johnson | 30 HP | 1980–2005 | 0395289, 0777818, 0395265 |
| Johnson | 35 HP | 1978–2005 | 0395289, 0777818, 0395265 |
Always compare the complete engine model designation and the impeller removed from the water-pump housing. Year ranges alone are not sufficient to confirm fitment.
Technical Specs
- Product Type
- Water pump impeller with drive key
- Application
- Listed Evinrude and Johnson outboard water-pump systems
- Horsepower Range
- 20 HP–35 HP, subject to the brand and model-year conditions above
- Reference Key
- 0344470
- Installation
- Replacement installation in the water-pump assembly
- Product Status
- Aftermarket replacement; not an OEM component
What’s in the Box
- 1 × Water pump impeller
- 1 × Drive key
This is a single impeller-and-key replacement assembly, not a complete water-pump repair kit. Water-pump housing parts, wear plates, gaskets, seals, and fasteners are not included unless separately specified.
Installation Notes
- Turn off the engine, remove the ignition key, and follow the outboard manufacturer’s safety procedures before servicing the water-pump assembly.
- Remove the lower unit according to the service manual for your exact engine model.
- Remove the water-pump housing and retain the hardware in the order required for reassembly.
- Lift out the old impeller and remove the existing drive key from the driveshaft groove.
- Inspect the housing, wear plate, seals, and water passages for scoring, cracks, blockage, or excessive wear. Replace damaged components before installation.
- Install the supplied drive key securely in the shaft groove, then slide the new impeller into position.
- Refit the water-pump housing while turning the driveshaft in the direction specified by the service manual so the vanes seat correctly.
- Reinstall and tighten the housing hardware to the manufacturer’s specifications, then reinstall the lower unit.
- Test the outboard in an appropriate water supply and confirm a normal cooling-water flow before operating under load.
Professional installation is recommended if you do not have the correct service manual or experience servicing outboard lower units.
Troubleshooting & FAQ
How do I confirm this impeller fits my engine?
Compare your complete engine model, brand, horsepower, and year with the compatibility table, then compare the original impeller and key with the listed OEM and aftermarket references. If any of these details differ, consult the engine service manual or a qualified marine technician before ordering.
Does the product include the drive key?
Yes. The company listing identifies this product as a water pump impeller with key, and the package includes one impeller and one drive key.
Is this a complete water-pump kit?
No. This listing is for one impeller with its drive key. It does not include a housing, wear plate, gasket, seal, or other water-pump components.
What are the signs of a worn impeller?
Possible signs include reduced cooling-water flow, an overheating warning, or an engine that runs hotter than normal. A damaged or hardened impeller may also be found during routine water-pump inspection.
What should I check if the engine still overheats after installation?
Check the water intake, water passages, thermostat, pump housing, wear plate, seals, and installation of the drive key. Also verify that the impeller is correct for the complete engine model and that the housing and lower unit were reassembled according to the service manual.
Is this an OEM part?
No. This is an aftermarket replacement impeller and key assembly. The OEM and aftermarket numbers shown above are reference numbers used to help verify application.
How often should the impeller be replaced?
Replacement timing depends on engine use, storage, water conditions, and the manufacturer’s maintenance schedule. Inspect the impeller at the interval specified in your outboard service manual and replace it whenever it shows wear or damage.
Safety & Important Info
- Confirm the complete engine model, horsepower, brand, and year before purchase.
- Do not rely on horsepower alone; different model-year applications can use different water-pump components.
- Inspect the pump housing, wear plate, seals, and water passages during installation.
- Do not operate the outboard without an appropriate cooling-water supply.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and proper cooling-system operation.
About Sea Sierra
- Marine Replacement Parts — We provide aftermarket components for common outboard maintenance and repair applications.
- Application-Focused Listings — Product references and compatibility details are provided to help customers compare their original parts.
- Support for Fitment Checks — When in doubt, use the complete engine model and original part information before ordering.
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