Mercury Mariner Water pump Impeller kit 35 40 45 50 hp hp replaces 46-73640a2

Water pump service kit. 30-70 hp 2 stroke. 70 (3 CYL.). 4977157 thru 6428680 1977-1983. 45 (4 CYL.). 5531630 & Up 1986-Up. 35 (2 CYL.). 6445653 & Up 1984-1989.

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