TOTAL SEAL 4.000 1.2 1.5 2.5 8CYL GAS PORT For Use With 8 Cylinder Engine; 4.000 Inch Bore; Steel Top Ring; With 1.2 Millimeter Top Ring/ 1.5 Millimeter Second Ring/ 2.5 Millimeter Standard Tension Oil Ring; Complete Set; Street/ Race Use; Gas Ported