This is a genuine Dana/Spicer loaded open differential for the Super 35 rear axle found in some 1999-2003 Jeep Grand Cherokee’s. This kit includes both differential side bearings and a set of ring gear bolts. This is for gear ratio's 3:54 and up numerically (3:73, 4:10, 4:56, etc.). Shipping is a flat $30.00 in the continental U.S.