Water pump impeller for outboard motor cooling 12 × 41 × 14 mm

This outboard water pump impeller from CEF Marine is model 500396 and is used as a rotor in the engine's cooling water pump. The impeller circulates cooling water through the engine's cooling system and is a spare part, not a complete water pump kit.

The impeller has six flexible vanes and a keyway drive. The inner diameter is 12 mm, the outer diameter is 41 mm, and the axial width is 14 mm. Gaskets and a separate key are not specified as included.

Compatibility includes Tohatsu models M2.5A2, M3.5A2, and M3.5B2, as well as Nissan models NS2.5A2, NS3.5A2, and NS3.5B2. The impeller also cross-references to Mercury/Mariner 2–3.3 HP 2-stroke and Johnson/Evinrude 2–3 HP 2-stroke. No compatibility with 4-stroke engines is stated.

Replaces OEM numbers

Johnson/Evinrude: 114812 and 0114812
Mercury/Mariner: 47-95289-2 and 47-95289/2
Tohatsu/Nissan: 309-65021-1 and 309650211M

Tohatsu numbers 309-65021-0 and 309650210M are previous numbers replaced by 309-65021-1 and 309650211M. Further cross-references include Sierra 18-45312, Mallory 9-45312, and 47-114812.

Always check your engine/drive model and original part number before purchase.

Outboard water pump impeller
CEF Marine model 500396
Inner diameter: 12 mm
Outer diameter: 41 mm
Width: 14 mm
6 vanes
Keyway drive
For documented 2-stroke engines