Water Pump Impeller 777817 386084 for Johnson Evinrude 8 9.9 10 15 HP Outboard
Water Pump Impeller 777817 386084 for Johnson Evinrude 8 9.9 10 15 HP Outboard
Product Overview
Water pump impeller for Johnson and Evinrude outboards from 8 HP to 15 HP, 6 blades, 38.10 mm outer diameter, 12.75 mm hub, 17.86 mm high, replacing OMC 777817, 0386084 and Sierra 18-3050.
This is the small lower unit impeller on the 9.9 and 15 HP two stroke family, the one that lives directly under the water pump plate on the driveshaft. It is a plain round hub, no key, no spline, driven by the shaft fit alone, so a polished shaft is as important as a new impeller.
The same impeller is sold as 777817 by OMC and as 18-3050 by Sierra, and it is common to both Johnson and Evinrude badges because the gearcases are identical. Change it with the gear oil and you will not be doing the job twice in one season.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Outboard water pump impeller |
| Blades | 6 |
| Outer Diameter | 38.10 mm / 1-1/2 in |
| Hub Diameter | 12.75 mm |
| Height | 17.86 mm |
| Material | Neoprene |
| Net Weight | 19 g |
| Country of Origin | Taiwan |
Dimension Notes
| Measurement | Figure |
|---|---|
| Outer diameter, nominal | 38.10 mm |
| Hub diameter, nominal | 12.75 mm |
| Height, nominal | 17.86 mm |
| Figures quoted on the eBay listing | 37.65 mm outer, 12.74 mm hub, 16.87 mm high, 18 g |
| Drive | Round hub, no key, no spline |
OEM Cross Reference
| Brand | Part Numbers |
|---|---|
| OMC / Johnson / Evinrude | 386084, 0386084 |
| OMC / Johnson / Evinrude | 777817, 0777817 |
| Sierra | 18-3050 |
| Mallory | 9-45201 |
| CEF | 500355 |
| Cross reference | 47-00587 |
Compatible Engines
| Brand | Horsepower | Years |
|---|---|---|
| Johnson / Evinrude | 8 HP | 1996 to 1998, 2003 |
| Johnson / Evinrude | 9.9 HP | 1975 to 1977, 1979, 1982, 1984 to 1999 |
| Johnson / Evinrude | 10 HP | 1997, 2000 to 2001, 2006 to 2007 |
| Johnson / Evinrude | 15 HP | 1975 to 1977, 1984 to 1992, 1995, 1997, 1999, 2001, 2004 |
What's Included
| Component | Qty |
|---|---|
| Water pump impeller | 1 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Check the number on the old impeller, 777817 and 386084 are the same part
- Check the horsepower and year against the table above, the 9.9 and 15 HP share this impeller
- Check the driveshaft for scoring, a polished shaft will let a new impeller slip
- Check the pump housing liner and the plate for grooves before refitting
- Fit with glycerine or soap only, never grease or oil on neoprene
- Fold the blades in the direction of rotation as the housing goes down
- Change the gear oil at the same time and check the drain plug washers for water
- Run on muffs and check the telltale before leaving the ramp
- 30-Day Easy Returns
- Free Worldwide Shipping
Verfügbarkeit für Abholungen konnte nicht geladen werden
Boat Owners' Review
Before You Buy
Frequently Asked Questions
What is your refund policy?
We offer a 14-day hassle-free return on all products. Items must be unused and in original packaging. Every XRmarine part is also covered by our 1-year warranty against manufacturing defects. If something is not right, email us at info@xrmarineparts.com — replacement or full refund, your choice.
See our full Refund Policy for complete details.
How does shipping work?
Free international shipping on every order — no minimums. We operate a global warehouse network with a main distribution centre in Asia (10-20 business days). We also hold stock in regional warehouses across the United States, Germany, the United Kingdom, Australia, and Poland (opening soon) — most orders arrive in 1-3 business days within those countries and in 2-8 business days to nearby regions. Tracking included.
See our full Shipping Policy.
How do you keep prices fair?
We cut out the middlemen. XRmarine sources directly from quality manufacturers and sells at honest prices. Same OEM-quality parts, no dealership markup. Every order comes with free shipping, real expert support, and a 1-year warranty.
Learn more on our About Us page.
What payment methods do you accept?
We currently accept PayPal — a fast, secure way to pay online. Credit card payments (Visa, Mastercard, American Express) and Shopify Payments are being set up and will be available soon. We appreciate your patience.