This cooling water impeller for Honda 4-stroke outboard motors is CEF Marine model 500391 and is intended as a replacement part for the engine's cooling water pump. The primary compatibility is for Honda 175 and 225 hp 4-stroke outboard motors, where original reference 19210-ZY3-003 is specified.
The impeller is mounted on the vertical drive shaft in the water pump and ensures the circulation of cooling water through the engine's cooling system. It has six flexible blades, an inner diameter of 26 mm, an outer diameter of 89.75 mm, and a width of 31.3 mm.
The delivery includes one impeller. Key, gaskets, O-rings, pump housing, liner, and other service parts are not included. Therefore, inspect existing pump parts upon disassembly and select any supplementary components based on the engine's full model and serial number.
Compatible engine models
The directly specified application is Honda 175 and 225 hp 4-stroke outboard motors. Original number 19210-ZY3-003 also appears on selected Honda BF175, BF200, BF225, and BF250 engines. The corresponding Tohatsu reference HZY3-19210-003 is used on selected BFT200, BFT225, and BFT250 models. Compatibility depends on the specific engine variant and the specified original number.
OEM and cross-references
The primary Honda original reference is 19210-ZY3-003. Honda 19210-ZY3-023 is used as a newer service number at the same reference position in relevant engine variants. Documented cross-references include Tohatsu HZY3-19210-003 and HZY319210003, Sierra 18-3031, Mallory 9-45106, and RecMar REC19210-ZY3-003.
Always check the engine/drive model and original part number before purchasing.
Key featuresCooling water impeller for outboard motor water pump
CEF Marine model 500391
For Honda 175 and 225 hp 4-stroke
Honda original reference: 19210-ZY3-003
Inner diameter: 26 mm
Outer diameter: 89.75 mm
Width: 31.3 mm
Number of blades: 6
Scope of delivery: 1 impeller
