Primary Timing Chain Idler Sprocket for Select 99-12 Jeep Models w/ 3.7L, 4.7L Crown AutomotivePrimary Timing Chain Idler Sprocket for Jeep 1999 2010 WJ, WG, WK, WJ Grand Cherokee w 4. 7L or 3. 7L Engines, 2006 2010 XK, XH Commander w 4. 7L or 3. 7L Engines, 2002 2012 KJ, KK Liberty w 3. 7L Engine, 50 Teeth Features and Benefits: 12 Month Warranty 50 Teeth Direct Replacement For Models w 3. 7L or 4. 7L Engines Primary Timing Chain Idler Sprocket Use Existing Hardware Details: Material: Metal Finish: Unpainted Hardware Included: Use Existing