Add some visual attitude to your rear axle with these chrome differential covers. Theyre stamped from heavy-gauge steel to ward off those pesky oil leaks, and chrome plated for long lasting good looks. GM 10-Bolt 7.5 Inch Rearend Differential Cover Approximately 10-3/4" side to side. Approximately 10" up and down. It has a squared off oval shape. Mounts with 10 bolts. Fits: Many 1978-Up GM midsize cars. 1982-Up Camaro/Firebird. S-10/S-15 pickups.