Product Details: Dana 30 4.56 ring and pinion ratio Low pinion Short pinion (cast axle housing measures ~9" from the cover mounting face to the face of the bore for the pinion seal) 7.13" (181MM) ring gear diameter Thin ring gear 3/8"-24 threads in ring gear 3.73 and up carrier required 1.375" diameter pinion 26 spline pinion Requires Spicer 706016X differential bearing kit to complete the install kit Parts Included: (1) ring and pinion set (1) inner pinion bearing (1) outer pinion bearing (1) pinion slinger (1) pinion crush sleeve (Spicer 50576) (1) pinion seal (Spicer 50660) (does not fit all Dana 30 housings and may require Spicer 44895 to be purchased) (1) pinion nut (1) kit of pinion depth shims (10) ring gear bolts Fits: 2000 - 2001 Jeep Cherokee XJ 1997 - 2006 Jeep Wrangler TJ 1996 - 2004 Jeep Grand Cherokee ZJ and WJ Brand: Dana Spicer Part Number: Dana Spicer 708132-5 Warranty: 6 month warranty and case by case basis.