GM Big Block Engine Circulating Pump | Sierra 18-3577-2
GM 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 Sherwood 1100
