MerCruiser Small Block Chevy Water Circulating Pump 

Mercruiser small block chevrolet water circulating pump (also used in Indmar small block chevy engines). BI-directional pump for most small block GM marine applications. Mounts to crankshaft with screws part number 565252Q (3).

Replaces MerCruiser 17437.

• Includes pump and gasket to mount to engine block.

Manufactured by Barr Marine. Part number MC-2-17437.