GM 4 and 6 Cylinder Water Circulating Pump 18-682M. Marine water pump used by MerCruiser, Volvo Penta, Indmar, Crusader. Pump will fit GM 4 and 6 cylinder inline engines. Used on 2.5L and 3.0L (181 ci) marine engines made from 1967 to current. Brass plug in bypass outlet. Boot and clamp not required.

Marine circulating water pump for GM V6 and V8 small block marine engines. Used by MerCruiser, Volvo Penta, OMC, Crusader, Marine Power. Pump will fit all GM 4.3, 5.0, and 5.7L marine engines. Pump is Bi Directional, Brass Impeller, and includes gaskets.

Circulating water pump for GM 8.1L marine engines. Pump is bi-directional Includes pump mounting gaskets.