GM Big Block Engine Circulating Pump | Sierra 18-3577-2 Adapters a high density polyethylene material

a high density polyethylene material that is abrasion resistant and provides a high resistance to water penetration made

discharge port

For Mercruiser Alpha I Gen II drives

1 1/2" Hose Diesel Deck Fill | Whitecap Industries 6124

GM Big Block Engine Circulating Pump | Sierra 18-3577-2 Adapters a high density polyethylene materialGM Big Block Engine Circulating Pump Sierra 18 3577 2 GM Big Block Engine Circulating Pump For all GM V8 454 & 502 cu. in. marine engines with stamped steel or composite timing covers Includes pump mounting gaskets Pump is bi directional Replaces Mercury 8504541 Replaces Crusader RA057019 Replaces Pleasurecraft Marine RA057019 Replaces OMC 3855991 Replaces Volvo Penta 3855991 Replaces Mallory 9 42604 Replaces Sierra 18 3577, 18 3577 1 Replaces