This water pump impeller for Tohatsu outboard motor is a CEF Marine 500344 spare part for the engine's cooling water pump. The flexible impeller circulates cooling water through the engine's cooling system and is manufactured for engines using Tohatsu OEM no. 3B2-65021-1 or 3B2-65021-1M.
The impeller is made of black neoprene/CR rubber and has 6 flexible blades. It measures 12 mm in internal diameter, 40 mm in external diameter, and 18 mm in axial width. The design features a key drive with a keyway for a separate impeller key.
Compatibility includes the Tohatsu 2-stroke models M6B, M8B, and M9.8B, as well as the 4-stroke models MFS6A3, MFS8A3, MFS9.8A3, MFS6CZ, MFS8C, and MFS9.9CY. It can also be used for Nissan Marine NSF8A2 and NSF9.8A2 when the engine part number is 3B2-65021-1.
Replaces OEM numbers
Tohatsu: 3B2-65021-1 and 3B2-65021-1M
Mercury, Mariner and MerCruiser: 47-436065-2
Other cross-references: Sierra 18-8920 and Albinus Premium 06-03-056
1516344
The impeller key 3B2-65022-0 is a separate spare part and should be checked during service. The impeller is also included in the Tohatsu water pump kits 3B2-87322-2 and 3B2-65231-2. Neoprene/CR is intended for normal cooling water conditions in fresh and salt water, but not for water heavily contaminated with oil or chemicals.
Always check the engine/drive model and original part number before purchasing.
Key features
Flexible water pump impeller for the engine cooling system
CEF Marine part no. 500344
12 mm internal diameter
40 mm external diameter
18 mm axial width
6 blades in neoprene/CR rubber
Key drive with keyway for separate impeller key
Primary Tohatsu OEM numbers: 3B2-65021-1 and 3B2-65021-1M
