Exhaust Manifold Damper for Select 1975-1991 CJs, SJ, J-Series w/ V8 Engines Crown AutomotiveExhaust Manifold Damper for Select 1975 1981 CJ 5, CJ 6, CJ 7 w 5. 0L Engine, 1975 1991 SJ, J Series w 5. 9L or 6. 6L Engines Features and Benefits: 12 Month Warranty Direct Replacement For Models w 5. 0L, 5. 9L or 6. 6L Engines Use Existing Hardware Details: Material: Steel Finish: Unpainted Hardware Included: Use Existing Hardware Interchange: J3225005 Application: 1975 1975 Jeep CJ 6 w 5. 0L (V8 304) Engine None; 1975 1979 Jeep J Series J 10 w 6.