This water pump impeller for Yamaha/Mariner outboard motors is a CEF 500316 aftermarket spare part for the engine's cooling water pump. The impeller circulates cooling water through the engine's cooling system and replaces, among others, the Yamaha reference 6H3-44352-00.
The impeller is made of neoprene and has six flexible blades. It measures 18.05 mm in internal diameter, 51.8 mm in external diameter, and 19 mm in width. The hub has a key drive, and the dimensions and drive type should be compared with the existing impeller before installation.
The variant-specific engine designation includes 25B, 60, and 70 for 2-stroke engines as well as 40XS for 4-stroke engines. The Yamaha OEM reference 6H3-44352-00-00 is also linked to the engine series F40A/C, 40V, F45A, 50G/H, 55B, PRO50, F50A/B/F, F50H, FT50B/C/G, FT50J, F60A/C, F60F, FT60B/D, FT60G, 60F, 70B up to and including 2003, as well as F70A.
Compatible Yamaha applications
Older application data for CEF 500316 includes C40 from 1997-2002, C50 from 1999-2001, C55 Drive I and Drive II from 1991-1995, C60 from 1996-2001, C70 from 2000-2001, E48 and E60 from 1995-2000, F40 from 1999, F50 from 1999-2005, F60 from 2002-2005, P60 from 1991-1999, T50 from 1996-2005, as well as T60 from 2003-2004.
Compatible Mariner applications
The impeller cross-references to the Mariner/Mercury numbers 47-81423M and 47-97108M. For Mariner 48 M, 47-81423M applies up to serial number 02415 and 47-97108M from 02416. For 48 ML, the change is at serial number 33125/33126. For 55 M, the change is at 02730/02731, while for 55 ML it is at 34925/34926. The number 47-97108M is also used on documented W48, 55E, 55EL, and W55 variants.
Replaces OEM and part numbers
The primary cross-references are Yamaha 6H3-44352-00 and 6H3-44352-00-00, former Yamaha number 697-44352-00-00, and Mariner/Mercury 47-81423M and 47-97108M. Additional aftermarket references include Sierra 18-3069, Mallory Marine 9-45602, GLM 89910, and Albinus 06-03-055.
Related service parts
The Yamaha water pump repair kit 6H3-W0078-02-00 contains the OEM impeller 6H3-44352-00-00. The kit and the combination with pump housing 6H3-44311-02-00 are related service solutions, but are not included with this impeller and must be checked against the specific engine.
Always check the engine/drive model, year, serial number, impeller dimensions, hub type, and original part number before purchasing.
Key featuresAftermarket impeller for the engine's cooling water pump
CEF part number: 500316
Material: Neoprene
6 flexible impeller blades
Internal diameter: 18.05 mm
External diameter: 51.8 mm
Width: 19 mm
Key drive
Primary Yamaha reference: 6H3-44352-00
