D1005 V1035 Piston Ring for 76mm 3-cylinder Engine STD 76*2HK+1.5+4 16271-21050 Piston ring set designed for 76mm bore 3-cylinder engines.Features standard dimensions of 76mm outer diameter with 2HK, 1.5, and 4mm ring thicknesses.Compatible with engine models requiring specification 16271-21050.Includes three rings per set, intended for piston repair and rebuilding applications.Suitable for use in industrial or farming-related machinery engines where precise ring fitment is required.