Sierra 18-4620 2 Ring Standard Bore Inline Piston Kit

Replaces OEM part #•MERCURY MARINE 780-9229A7For:40-50 HP; 4 Cyl.; 2.565/std boreContains:18-4620 Piston - replaces O.E.# 780-9229A718-3966 Piston Ring -replaces O.E.# 39-18653A12Wrist Pin ( Not Sold Separately)18-4294 Circlips - replaces O.E.#40-52035