Single Piston Fits Gm Chevy Isuzu Marine 4.3L 262 5.7L 350 Dish Top Size = .030 Oversized Bore Diameter (STD) Alloy Top Ring 2nd Ring Oil Ring Pin Diameter Compression Height 101.60mm (4.000in) Standard 5/64in 5/64in 3/16in 0.9273 1.542 Need Rings? Please Click HereNeed Rings? To check our inventory, please Click Here for Cast or Click Here for Moly