PWC Engine Powerhead Rebuild Kit PWC 100-04-14 A for Mercury 25 HP 2-Cylinder

This powerhead rebuild kit is specified for compatible Mercury 25 HP 2-cylinder engines with a 2.562-inch bore. The kit includes two .040-inch (1.00 mm) oversize pistons with Japanese RIK performance rings, piston pins, clips, a complete gasket kit, main bearings, top-end needle bearings, lower rod bearings, and rod bolts. The engine requires boring to the oversize, so the pistons are not a direct-fit standard-size replacement. Verify required size and engine information before ordering.