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Also verify your existing thermostat's OEM part number against the cross-reference list to ensure a match
and backup rings
Specification Value Product Type Lower Unit Gearcase Seal Kit Installation DIY or Professional Components Gaskets
38 40 2-Stroke 1976-1990 1395-5109-1 Mercury WMK 8 50 2-Stroke 1976-1990 1395-5109-1 Mercury WMK 5
T 50 4-Stroke 1997–2007 63D-W0078-01 Yamaha F50DETL 50 4-Stroke 1995–2010 63D-W0078-01 Yamaha F50F
Impeller Kit – Fits Westerbeke Generators (Replaces 33112) family-yamaha-50elrq Also verify your existing thermostat'sImpeller Kit Fits Westerbeke Generators (Replaces 33112) This impeller kit is designed for a wide range of Westerbeke marine generators, including models from 6. 5 kW to 20. 0 kW. It directly replaces OEM part number 33112, but compatibility can vary based on the specific generator's configuration (60Hz vs. 50Hz models) and the existing raw water pump installed. It serves as a direct cross reference for several other aftermarket and OEM part numbers,