GM Big Block Water Circulating

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Sierra Marine

Replaces OEM #3855991.

18-3574 CIRCULATING WATER PUMP Replaces: OMC 3855991 Mercruiser 850454 850454 1
For: Big block GM engines with composite timing covers "Late Model" includes  482 and 502 CID

Warranty (PDF)
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Sierra Marine Gm Big Block Water Circulating is equivalent to parts:

Sierra Marine is the market leader for aftermarket marine engine parts. Sierra products cover every major engine brand. Sierra offers a comprehensive product line and an unsurpassed customer satisfaction warranty covering parts and labor.