Sierra Mercury/Yamaha Outboard Water Pump Kit - S18-3425 - Replaces 84188T

Sierra water pump kit without housing for Mercury Marine outboards, cross-referencing Yamaha 663-W0078-A0-00 applications. Kit includes impeller, wear plate, insert cup, impeller key, bolts and gaskets built to OEM specifications. Replaces Mercury Marine 84188T.

Important: Specifications vary by product code. Confirm the required size or configuration before ordering.

Product code: S18-3425

Please compare the product code and specifications with the required application before ordering.