Water Pump Impeller – Fits Johnson/Evinrude/OMC 20–35 HP Outboards (Replaces 388702, 395265)
Water Pump Impeller – Fits Johnson/Evinrude/OMC 20–35 HP Outboards (Replaces 388702, 395265) is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Water Pump Impeller – Fits Johnson/Evinrude/OMC 20–35 HP Outboards ...
Water Pump Impeller – Fits Johnson/Evinrude/OMC 20–35 HP Outboards (Replaces 388702, 395265) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump impeller is designed as a replacement for selected Johnson/Evinrude/OMC 2-stroke outboards in the 20–35 HP range. It helps circulate raw water through the cooling system and maintain proper engine operating temperature.
The documented replacement references for this product are Johnson/Evinrude/OMC part numbers 388702 and 395265. Confirm the exact engine model, year, serial number, and original impeller number before ordering.
- Replacement water pump impeller for selected Johnson/Evinrude/OMC outboards.
- Designed for the listed applications where the original part number matches.
- Supports proper raw-water circulation through the outboard cooling system.
- Aftermarket replacement component; not manufactured by Johnson, Evinrude, or OMC.
Part Number Matrix
Use the following documented references when comparing your existing impeller or service-manual information.
| Brand | Part Number | Use |
|---|---|---|
| Johnson/Evinrude/OMC | 388702 | Replacement reference |
| Johnson/Evinrude/OMC | 395265 | Replacement reference |
Engine & Model Compatibility
This impeller is associated with selected Johnson/Evinrude/OMC 2-stroke outboards rated from 20 HP through 35 HP. Because compatibility can vary by model family and production range, horsepower alone is not sufficient for final identification.
| Brand | Rated HP | Stroke | Year / Serial Condition | Replacement Reference | Fitment Note |
|---|---|---|---|---|---|
| Johnson/Evinrude/OMC | 20 | 2-Stroke | Varies by model | 388702, 395265 | Verify the complete model number and original part number. |
| Johnson/Evinrude/OMC | 25 | 2-Stroke | Varies by model | 388702, 395265 | Verify the complete model number and original part number. |
| Johnson/Evinrude/OMC | 28 | 2-Stroke | Varies by model | 388702, 395265 | Verify the complete model number and original part number. |
| Johnson/Evinrude/OMC | 30 | 2-Stroke | Varies by model | 388702, 395265 | Verify the complete model number and original part number. |
| Johnson/Evinrude/OMC | 35 | 2-Stroke | Varies by model | 388702, 395265 | Verify the complete model number and original part number. |
Important: The available product record confirms the Johnson/Evinrude/OMC 20–35 HP application and the 388702 and 395265 replacement references, but it does not provide a complete model-year or serial-number list. Do not rely on horsepower alone when confirming fitment.
Technical Specs
- Product Type
- Water pump impeller
- Application
- Selected Johnson/Evinrude/OMC 2-stroke outboards
- Rated Horsepower Range
- 20–35 HP, subject to exact model verification
- Installation
- Replacement component installed inside the outboard water pump housing
- Cooling System
- Raw-water cooling
- Replacement References
- 388702 and 395265
- Construction
- Flexible impeller material with an integrated drive hub
- Brand Status
- Aftermarket replacement; not an OEM component
What’s in the Box
- 1 × Water pump impeller
No housing, wear plate, gasket, key, or complete water pump repair kit is included unless separately stated in the order details.
Installation Notes
- Disconnect the battery and follow the engine manufacturer's safety procedures.
- Place the outboard gear selector in the neutral position and support the lower unit securely.
- Remove the lower unit according to the service manual for your exact engine.
- Remove the water pump housing and take out the old impeller.
- Clean debris from the pump housing and inspect the housing, wear plate, key, and seals for damage or excessive wear.
- Install the replacement impeller with the drive key or pin correctly positioned.
- Use a suitable water-pump lubricant or clean soapy water during assembly as specified by the service manual. Do not run the impeller dry.
- Reinstall the pump housing and lower unit, ensuring that the driveshaft, shift shaft, and water tube are correctly aligned.
- Run the engine only with an appropriate water supply and confirm a strong cooling-water discharge before normal operation.
Troubleshooting & FAQ
How do I know if this impeller is the right one for my motor?
Compare your complete engine model, horsepower, year, and serial information with the service manual or parts catalog. Also compare the original impeller's part number with 388702 or 395265. Horsepower by itself does not confirm fitment.
What are the signs of a failing water pump impeller?
Common signs include weak or absent water flow from the telltale, an overheating warning, rising engine temperature, or visible deterioration of the old impeller. Shut down the engine if it overheats and inspect the cooling system.
How often should I replace the impeller?
Replacement intervals depend on operating hours, storage conditions, and exposure to sand, silt, or salt water. Inspect the impeller during scheduled water-pump service and replace it whenever the vanes are cracked, permanently bent, brittle, or worn.
Can I replace only the impeller?
Often yes, if the pump housing, wear plate, seals, and drive key are in good condition. Replace damaged or worn related parts at the same time to restore proper water-pump performance.
Are 388702 and 395265 OEM numbers?
They are Johnson/Evinrude/OMC replacement references associated with this application. This listing is for an aftermarket replacement impeller, not a genuine OEM component.
Is special lubricant needed during installation?
Follow the service manual for your engine. A suitable water-pump lubricant or clean soapy water may be used during assembly to prevent dry starting. Do not use a lubricant that can damage the impeller material, and never operate the pump without water.
Is this an OEM part?
No. This is an aftermarket replacement intended to match the listed application and replacement references.
Does this include a complete water pump kit?
No. The package contains one water pump impeller only. A housing, wear plate, gasket, key, or other repair-kit components are not included unless specifically listed with the order.
Safety & Important Info
- Confirm the complete engine model, year, serial information, and original part number before ordering.
- Do not rely on horsepower alone to determine compatibility.
- Inspect the water-pump housing and related components during installation.
- Never operate the outboard without an adequate water supply.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended when lower-unit service is unfamiliar.
About Sea Sierra
- Marine Replacement Parts — Practical replacement components for common outboard maintenance and repair needs.
- Application-Focused Information — Product references and fitment guidance are provided to help customers verify the correct part.
- Customer Support — When in doubt, provide the complete engine model and original part number before purchase.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
