GM Big Block Circulating Water Pump | Eastern Industries 18-685M
GM Big Block Circulating Water Pump | Eastern Industries 18-685M
Eastern Industries
15 in stock
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GM Big Block Circulating Water Pump | Eastern Industries 18-685M
Engine circulating water pump for GM 454 & 502 CID marine engines.
- 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 OMC 3855991
- Replaces Volvo Penta 3855991
- Replaces MMD Powerline 18-685M
! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.
Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.
MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.