V6 and V8 Chevy Crankshaft Driven Water Pump Replacement for Volvo #857451 

Crankshaft-driven bronze/brass raw water pump with integrated cam. Replaces or supersedes older numbers including 857451, 855722, 856952, 856513, 826456, 841640, and 3860703. Note that replacing an older pump design with the current 857451 may require shorter crankshaft mounting bolts. Replaces OEM crankshaft-mounted raw water / sea water pump used on various Volvo Penta marine engines (such as V-6, V-8, AQ series, 3.0L to 8.1L / 7.4L models like 430, 500, 570, and 740 series). 1-1/4 in. inlet and outlet ports, 2 3/4 in. bolt circle, Bronze housing and cover.