Water Pump Impeller – Fits Johnson/Evinrude 8–15 HP (Replaces 386084, 0386084, 0777817)
Water Pump Impeller – Fits Johnson/Evinrude 8–15 HP (Replaces 386084, 0386084, 0777817) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Water Pump Impeller – Fits Johnson/Evinrude 8–15 HP (Replaces 38608...
Product Details
This Water Pump Impeller – Fits Johnson/Evinrude 8–15 HP Outboard Motors (Replaces 386084, 0386084, 0777817) is an essential component for maintaining your engine’s cooling system. It is designed as a direct-fit replacement for a wide range of Johnson and Evinrude 2-stroke outboards (9.9–15 HP, 1974–2006) and 4-stroke outboards (8–15 HP, 1995–2004), ensuring proper water circulation to prevent overheating.
This part provides a direct interchange for several OEM and aftermarket part numbers, including Johnson/Evinrude 386084/0386084, Sierra 18-3050, and GLM 9-45201.
- Constructed with durable neoprene rubber blades and a solid brass hub for corrosion resistance.
- Features a press-fit installation directly onto the engine's drive shaft.
- Engineered with 6 blades to meet OEM flow specifications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 386084 / 0386084 / 777817 |
| Sierra | 18-3050 |
| GLM | 9-45201 |
| Mallory Marine | 9-45201 |
| CEF | 500355 |
| SouthMarine | 02-386084 |
| Candy Marine | 386084 |
| QuickMarine | 0386084 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This impeller is designed for Johnson and Evinrude 2-stroke and 4-stroke outboard models as specified in the compatibility chart.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Johnson | Outboard | 8 | 4-Stroke | 1995–2004 | 386084 | 211cc engines |
| Johnson | Outboard | 9.9 | 2-Stroke | 1974–2006 | 386084 | |
| Johnson | Outboard | 9.9 | 4-Stroke | 1995–2004 | 386084 | 211cc & 305cc engines |
| Johnson | Outboard | 15 | 2-Stroke | 1974–2006 | 386084 | |
| Johnson | Outboard | 15 | 4-Stroke | 1995–2001 | 386084 | 305cc engines |
| Evinrude | Outboard | 8 | 4-Stroke | 1995–2004 | 386084 | 211cc engines |
| Evinrude | Outboard | 9.9 | 2-Stroke | 1974–2006 | 386084 | |
| Evinrude | Outboard | 9.9 | 4-Stroke | 1995–2004 | 386084 | 211cc & 305cc engines |
| Evinrude | Outboard | 15 | 2-Stroke | 1974–2006 | 386084 | |
| Evinrude | Outboard | 15 | 4-Stroke | 1995–2001 | 386084 | 305cc engines |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct replacement; Press fit on drive shaft
- Materials
- Neoprene rubber blades with brass hub
- Number of Blades
- 6
- Dimensions
- External Diameter: 37.65–38.4 mm (1.48–1.51 in)
Height: 16.87–17.9 mm (0.66–0.70 in)
Internal Shaft Diameter: 12.74–12.8 mm (0.50 in) - Weight
- 17.8–18 g (0.039 lb)
- Warranty
- Varies by manufacturer (1 Year to Lifetime)
What’s in the Box
- 1 x Water Pump Impeller (386084/0386084)
- 1 x Drive Shaft Key Pin (0300611) (Note: Included by select manufacturers like QuickMarine)
- 2 x O-rings (0319085, 0303067) (Note: Included by select manufacturers like QuickMarine)
Installation Notes
- Disconnect the spark plug wires and shift the outboard into neutral.
- Remove the lower unit (gearcase) mounting bolts and carefully separate it from the upper casing.
- Unscrew the bolts on the water pump housing and slide the housing up and off the driveshaft.
- Remove the old impeller, taking note of the blade orientation. Clean any debris from the housing and wear plate.
- Lightly grease the driveshaft and insert the drive key.
- Slide the new impeller onto the driveshaft, aligning the keyway.
- Rotate the driveshaft clockwise while pushing the water pump housing down over the impeller to correctly orient the blades.
- Secure the housing with its bolts, ensuring any gaskets or O-rings are correctly seated.
- Reinstall the lower unit, connect a water source to the engine, and start it to verify a strong water stream from the tell-tale.
Troubleshooting & FAQ
How do I know if my impeller needs replacing?
Common signs of a failing impeller include a weak or nonexistent water stream from the "tell-tale" outlet, a high engine temperature alarm, or steam from the exhaust. Inspect the impeller annually and look for cracked, torn, or stiff blades.
What is the recommended replacement interval?
For best performance and engine safety, it is recommended to replace the impeller every 1-2 years or every 100-200 hours of operation. Intervals should be shorter if operating frequently in sandy, silty, or saltwater conditions.
Will this fit my engine? The year range is very wide.
This impeller is designed for a broad range of Johnson and Evinrude 8 HP, 9.9 HP, and 15 HP outboards. However, always verify compatibility by checking your OEM part number and referencing our detailed Engine & Model Compatibility table before ordering.
The listed dimensions have a slight range. Why is that?
sober-thought The dimension range (e.g., 37.65mm to 38.4mm) reflects minor manufacturing variations between different aftermarket brands. All versions are engineered to fit the specified 12.7mm (0.50 in) driveshaft and perform within the required tolerances of the water pump housing.Does this kit include the drive key and O-rings?
Package contents vary by manufacturer. The core item is the impeller. Some brands, such as QuickMarine, may include a new drive key and O-rings. Please refer to the "What’s in the Box" section for specific details on inclusions.
Why is a consistent water stream from the "tell-tale" important?
The tell-tale stream is a visual indicator that the water pump is successfully circulating cool water through the engine. A strong, steady stream shows the impeller is working correctly. No stream or a weak, sputtering stream indicates a problem that requires immediate attention to prevent engine overheating.
What's the difference between OEM and aftermarket parts?
This listing is for an aftermarket replacement, not an original equipment manufacturer (OEM) part. It is built to meet or exceed OEM-level specifications using comparable materials and is manufactured in an ISO 9001 certified facility. Each batch is inspected to ensure quality and consistency.
How fast do you ship and what does it cost?
We ship worldwide, with typical transit times of 5–15 days for most regions. Standard shipping is free. Expedited shipping options, if available for your location, will be presented at checkout.
sober-thoughtWhat is your warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or contact us for instructions.
Safety & Important Info
- Verify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement part, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or quality control.
Payment & Security
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