Description
The 309-65021-1 is a genuine OEM Tohatsu water pump impeller, commonly used in M2.5A2 / M3.5A2 2-stroke outboard engines.
It is designed to circulate seawater through the engine’s cooling passages, preventing overheating and maintaining optimal performance.
Typical specifications from parts listings (for aftermarket equivalents) include:
Overall diameter: ~42.94 mm
Height: ~14.34 mm
Internal hub (shaft) diameter: ~11.85 mm (non–key)
Material: molded rubber impeller with flexible vanes
Trust Central Outboards Services to supply the Tohatsu parts you need.




