The advance curve is easy to adjust with different advance springs and stop bushings which are included
1984-1985 XJ Cherokee
1999-2017 Chevrolet Silverado 1500 (Rear Axle) (Drive: 4WD
1974-1979 Jeep Wagoneer (Front Left Inner) (Note: Dana 44
5 Inch Lift Kit w/ SX8000 Shocks
Drive Belt Idler Pulley For Select 1994-2005 Jeep TJ, YJ, XJ, ZJ Models, 3 Inch Dia. Crown Automotive Differential and Pinion Shim Kit The advance curve is easyDrive Belt Idler Pulley For Select 1997 2002 TJ Wrangler w 4. 0L, 2. 5L, 1994 1995 YJ Wrangler w 2. 5, 4. 0L, LHD, 1994 2001 XJ Cherokee w 2. 5L, 4. 0L, LHD, 1996 2000 Cherokee w 2. 5L, 1997 1998 ZJ w 4. 0L, Smooth, Idler Pulley, 3 inch Diameter Features and Benefits: 12 Month Warranty 3 inch Diameter Direct Replacement For Models w 2. 5L, 4. 0L or 2. 7L Engines Smooth Details: Material: Plastic, Metal Color: Black Hardware Included: Included