Water Pump Impeller 334-65021-0 for Nissan Tohatsu 9.9 15 18 20 25 HP Outboard
Water Pump Impeller 334-65021-0 for Nissan Tohatsu 9.9 15 18 20 25 HP Outboard
Product Overview
Water pump impeller for Nissan and Tohatsu outboards from 9.9 HP to 25 HP, supplied as 1 impeller. It replaces Tohatsu 334-65021-0 (also listed as 334650210 and 334650210M), and crosses to Sierra 18-8921. The impeller measures 40.80 mm (1.61 in) outside diameter, 13.96 mm (0.55 in) at the hub, 23.35 mm (0.92 in) deep, with 8 blades and a keyed hub.
The Nissan and Tohatsu four-strokes in this range share one pump, and the impeller is the part that sets how much water reaches the powerhead at trolling speed. Vanes that have taken a set over a winter will pump at planing speed and starve the engine at idle, which is exactly when a small outboard is left running for hours. Check the telltale before every trip and replace the impeller on the interval in the manual.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Water pump impeller |
| Engine Family | Nissan and Tohatsu outboards, two-stroke and four-stroke |
| Horsepower | 9.9 HP to 25 HP |
| Outside Diameter | 40.80 mm (1.61 in) |
| Hub Diameter | 13.96 mm (0.55 in) |
| Depth | 23.35 mm (0.92 in) |
| Blades | 8 |
| Shipping Weight | 14 g |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| Tohatsu | 334-65021-0 |
| Tohatsu | 334650210 |
| Nissan | 334650210M |
| Sierra | 18-8921 |
Compatible Engines
| Model | Horsepower | Stroke | Years |
|---|---|---|---|
| NFS9.9B | 9.9 HP | 4-stroke | 2002 |
| NFS9.9B2 | 9.9 HP | 4-stroke | 2004, 2006 |
| NFS9.9C | 9.9 HP | 4-stroke | 2008 |
| NFS15B | 15 HP | 4-stroke | 2002 |
| NFS15B2 | 15 HP | 4-stroke | 2005-2008 |
| NFS15C | 15 HP | 4-stroke | 2008-2009 |
| NFS18B2 | 18 HP | 4-stroke | 2003-2008 |
| NFS20C | 20 HP | 4-stroke | 2008-2009 |
| NS9.9D | 9.9 HP | 2-stroke | 2002 |
| NS9.9D2 | 9.9 HP | 2-stroke | 2002 |
| NS15D2 | 15 HP | 2-stroke | 2002 |
| NS18E | 18 HP | 2-stroke | 2002 |
What's Included
| Component | Qty |
|---|---|
| Water pump impeller, 8 blade | 1 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Check the model code on the cowling, the NFS and NS prefixes separate the four-stroke from the two-stroke engines
- Compare the old impeller with the sizes above, 40.80 mm outside diameter is what identifies this impeller
- Lubricate with glycerine or liquid soap and turn the shaft clockwise as the housing goes down
- Check the wear plate and cup for scoring while the pump is apart, a grooved plate wears a new impeller fast
- Run on muffs and confirm a strong telltale before the boat leaves the ramp
- 30-Day Easy Returns
- Free Worldwide Shipping
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Boat Owners' Review
Before You Buy
Frequently Asked Questions
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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.
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