Brand new genuine GM OEM marine circulation pump made for all 7.4L (454 ci) and 8.2L (502 ci) marine engines. These are NOT aftermarket circulation pumps. Pumps include brass impeller made for salt water and fresh water applications. Two circulation pump gaskets are included.

Sierra part #18-3577 or #18-3574

Replaces Mercruiser: 850454, 8504541, 67859, 17670, 811573, 8504541

Replaces Volvo Penta: 3855991, 856609

Replaces OMC: 3855991

$109.00 plus shipping!

Item number: 110-E