.003 Inch Oversize Intake Valve for 81-90 CJs, YJ, SJ, J-Series w/ 4.2L Engine Crown Automotive. 003 inch Oversize Intake Valve for 1981 1986 CJ 5, CJ 7, CJ 8 1987 1990 YJ Wrangler, 1981 1986 SJ, J Series, All w 4. 2L Engine Features and Benefits: . 003 inch Oversize Intake Valve 12 Month Warranty Direct Replacement For Vehicles with 4. 2L Engine Sold Individually, (6) Required Details: Material: Metal Finish: Unpainted Hardware Included: Use Existing Hardware Application: 1981 1983 Jeep CJ 5 w 4. 2L Engine (w o VAM Engine) None; 1981 1983 Jeep