Standard Piston and Pin for 1979-1990 Jeep CJs, YJ, SJ, J-Series w/ 4.2L Engine Crown AutomotiveStandard Piston and Pin for 1979 1983 CJ 5, 1979 1986 CJ 7, 1981 1986 CJ 8, 1987 1990 YJ Wrangler, 1979 1986 SJ, J Series, All w 4. 2L (6 258) Engine Features and Benefits: 12 Month Warranty Direct Replacement Standard Size Use Existing Hardware Details: Material: Aluminum, Steel Finish: Unpainted Hardware Included: Use Existing Hardware Interchange: J8130208 Application: 1979 1983 Jeep CJ 5 w 4. 2L (6 258) Engine; 1979 1983 Jeep SJ Cherokee w 4. 2L