2 Ring Standard Bore Inline Piston Kit - Sierra
Replaces OEM part #
- MERCURY MARINE 780-9229A7
- 40-50 HP, 4 Cyl., 2.565/std bore
- 18-4620 Piston - replaces O.E.# 780-9229A7
18-3966 Piston Ring -replaces O.E.# 39-18653A12
Wrist Pin ( Not Sold Separately)
18-4294 Circlips - replaces O.E.#40-52035
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