Water Pump Impeller (309-65021-1) – Tohatsu 2.5/3.5 HP
309-65021-1
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Tohatsu/Nissan Water Pump Impeller – 309-65021-1
Essential cooling-system impeller for small Tohatsu/Nissan outboards.
Key Features
- Function: Circulates cooling water through the engine. Replace as part of routine maintenance.
- Notes: Six-vane rubber impeller.
Technical Specs
- OEM Part #: 309-65021-1 (aka 309650211M)
- Fits: Tohatsu / Nissan 2.5 HP & 3.5 HP outboards (common across M2.5/M3.5 families).
Compatibility / Fitment Guide
| Model | Power | Engine type |
|---|---|---|
| Tohatsu M2.5 | 2.5 HP | 2-stroke |
| Tohatsu 2.5 HP | 2.5 HP | — |
| Tohatsu 3.5 HP | 3.5 HP | — |
How to check before ordering: the part number on your old part should be 309-65021-1 (or a superseding number). If you are not sure, send us your engine model and serial number (on the plate on the engine bracket) and we will confirm fitment before you order. Tohatsu often uses the same part on related models, so this list may not be complete.
OEM Cross Reference
| Brand | Part Number |
|---|---|
| Tohatsu | 309-65021-1 |
| Tohatsu | 309650211M |
Questions & Answers
Q: Which engines does this fit?
A: Tohatsu M2.5 (2.5 HP 2-stroke) and Tohatsu 2.5 HP and 3.5 HP outboards. Check the part number 309-65021-1 or send us your engine model and serial number and we will confirm fitment before you order.
Q: How often should the impeller be replaced?
A: Replace it as part of routine maintenance to keep cooling water circulating through the engine.
References: Retailer and parts listings show 309‑65021‑1 for Tohatsu/Nissan 2.5–3.5 HP models.
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