Water Pump Impeller for Johnson/Evinrude 9.9–15 HP 2-Stroke Outboards, 1974–2006 – Replaces 386084, 0386084 and 0777817
Water Pump Impeller for Johnson/Evinrude 9.9–15 HP 2-Stroke Outboards, 1974–2006 – Replaces 386084, 0386084 and 0777817 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Water Pump Impeller for Johnson/Evinrude 9.9–15 HP 2-Stroke Outboar...
Water Pump Impeller for Johnson/Evinrude 9.9–15 HP 2-Stroke Outboards, 1974–2006 – Replaces 386084, 0386084 and 0777817 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump impeller is designed for selected Johnson and Evinrude 9.9 HP and 15 HP 2-stroke outboard motors manufactured from 1974 through 2006. It replaces the original water-pump impeller identified by Johnson/Evinrude and OMC reference numbers 386084, 0386084, 0777817 and 777817.
The impeller helps the outboard water pump circulate cooling water through the engine. Always compare the impeller, dimensions and original part reference with your existing component before ordering.
- Direct replacement water pump impeller for the listed 2-stroke applications.
- Applicable to Johnson and Evinrude 9.9 HP and 15 HP outboards from 1974–2006.
- Aftermarket replacement; not manufactured by Johnson, Evinrude, OMC or BRP.
Part Number Matrix
The following numbers are customer-facing OEM or aftermarket reference numbers associated with this impeller. They are provided for identification and cross-reference purposes only.
| Brand or Reference | Part Number |
|---|---|
| Johnson/Evinrude, OMC | 386084 / 0386084 |
| Johnson/Evinrude, OMC | 0777817 / 777817 |
| Mallory Marine | 9-45201 |
| Sierra Marine | 18-3050 |
| GLM Marine | 89770 |
| SEI Marine | 96-361-03A / 96-361-03AE |
Engine & Model Compatibility
This impeller is intended for 2-stroke Johnson and Evinrude outboard motors rated at 9.9 HP or 15 HP and manufactured from 1974 through 2006. Model designations, shaft configuration and serial-number ranges can vary, so verify the exact engine model and original impeller number before installation.
| Brand | Rated HP | Stroke | Years | OEM Reference Numbers |
|---|---|---|---|---|
| Johnson | 9.9 HP | 2-Stroke | 1974–2006 | 386084, 0386084, 0777817, 777817 |
| Johnson | 15 HP | 2-Stroke | 1974–2006 | 386084, 0386084, 0777817, 777817 |
| Evinrude | 9.9 HP | 2-Stroke | 1974–2006 | 386084, 0386084, 0777817, 777817 |
| Evinrude | 15 HP | 2-Stroke | 1974–2006 | 386084, 0386084, 0777817, 777817 |
Technical Specs
- Product Type
- Water pump impeller
- Application
- Selected Johnson and Evinrude 9.9 HP and 15 HP 2-stroke outboards
- Application Years
- 1974–2006
- Installation
- Replacement installation in the water-pump assembly; follow the engine manufacturer’s service procedure
- Primary OEM References
- 386084, 0386084, 0777817 and 777817
- Aftermarket References
- Mallory Marine 9-45201, Sierra Marine 18-3050, GLM Marine 89770 and SEI Marine 96-361-03A / 96-361-03AE
- Product Status
- Aftermarket replacement component; not OEM
What’s in the Box
- 1 x Water pump impeller
No additional gasket, key, pin, housing or water-pump repair-kit components are included unless specifically shown in the package contents or product photos.
Installation Notes
- Review the engine service manual and confirm the exact model, year, stroke and original impeller reference.
- Disconnect the battery and place the outboard in a secure, upright position.
- Remove the lower unit according to the manufacturer’s service procedure.
- Remove the water-pump housing cover and carefully note the position of seals, washers and any drive key or pin.
- Remove the old impeller and inspect the housing, wear plate, keyway and related seals for damage or excessive wear.
- Clean the water-pump cavity and install the replacement impeller using the correct key or pin from the original assembly where applicable.
- Lubricate the impeller and housing with a lubricant recommended for water-pump service. Do not use a lubricant that can damage the impeller material.
- Reinstall the housing, seals and fasteners in their original positions and tighten them to the engine manufacturer’s specifications.
- Reattach the lower unit, reconnect the battery and test the outboard in water or with an appropriate flushing attachment.
- Confirm a steady cooling-water telltale stream and monitor the engine for overheating before returning it to service.
Troubleshooting & FAQ
Which outboards is this impeller for?
It is intended for selected Johnson and Evinrude 9.9 HP and 15 HP 2-stroke outboard motors manufactured from 1974 through 2006. Verify your exact model and original impeller reference before ordering.
Does this impeller fit 4-stroke engines?
The listed application for this product is limited to 2-stroke Johnson and Evinrude outboards. Do not use the 4-stroke fitment information from an earlier listing for this product.
Does this impeller fit 8 HP engines?
The company application for this product specifies 9.9 HP and 15 HP 2-stroke Johnson and Evinrude outboards. An 8 HP engine is not included in the confirmed application for this listing.
How do I know if my impeller needs to be replaced?
Common warning signs include a weak or missing telltale stream, an overheating alarm, reduced cooling-water flow, or cracked, brittle, distorted or worn impeller blades.
Is this an OEM impeller?
No. This is an aftermarket replacement component. The OEM and aftermarket part numbers in this listing are provided only to help identify the intended application.
Are the key, gasket or water-pump housing included?
No. The package contains one water pump impeller only. A key, gasket, housing or complete repair kit is not included unless separately stated.
What is the recommended replacement interval?
Inspect the impeller during routine water-pump service and replace it when the service manual recommends or whenever wear, cracking, brittleness or cooling-flow problems are found. Service intervals can vary with operating hours and water conditions.
Shipping speed & cost?
We ship worldwide. Typical transit is 5–15 days, and available shipping methods and costs are shown at checkout.
Warranty & returns?
Warranty and return coverage are subject to the terms shown for your order. Contact customer support with your order details if you receive a damaged or incorrect item.
Safety & Important Info
- Verify the exact engine model, year, horsepower, 2-stroke configuration and original part number before purchase.
- Do not rely on horsepower alone; confirm the impeller dimensions and water-pump assembly against your engine service information.
- This is an aftermarket replacement, not an OEM component.
- Disconnect the battery and follow the manufacturer’s service and torque procedures during installation.
- Do not operate the outboard without adequate cooling-water supply.
- Professional installation is recommended if you are not experienced with outboard lower-unit or water-pump service.
About Sea Sierra
- Marine Replacement Parts — We supply replacement components for common outboard maintenance and repair applications.
- Application-Focused Listings — Product pages identify supported engine types and reference numbers to help customers select the correct part.
- Global Fulfillment — Shipping options and estimated delivery times are displayed at checkout.
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