18-4641 Sierra Piston Kit Mercury 225-300HP I/B .015 Manufacturer: Sierra Part Number: 18-4641 Description: Piston Kit .015 Port Mercury 3.0L 225-250Hp Bore Size 3.640 Weight: 1.6200 Cross Ref #: Pro Marine 7015P, 826265A2, 826265A4, 826265A5, 878571A2 Mfg Part #: 826265A4 All pistons are supplied complete with piston rings, wrist pin and circlips (verify fitment using your model or serial number)
