2 Ring .015 Os Bore Inline Piston Kit - 18-4017 - Sierra
Replaces OEM part #
- MERCURY MARINE 783-9613A2
- 50-60Hp., 3 Cyl, 2.890/.015 bore
- 18-4017 Piston - replaces O.E.# 783-9613A2
18-4020 Piston Ring - replaces O.E.# 39-19721A1
Wrist Pin (Not Sold Separately)
18-4294 Circlips - replaces O.E.# 40-52035
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