Buick Skylark Differential Pinion Shim Replacement

7.5 in. 10 Bolt; 7.6 in.; 7.75 in. 9 Bolt GM 7.5 in.~Pinion depth shim kit

For GM 8.5/8.625"

8.25 in.; 8.875 in. 12 Bolt; Dana 30 GM 8.5 in.~Pinion depth shims

8 in.; 8.2 in. 10 Bolt GM 7.5 in.

For GM 9.3"

For GM 8.5/8.625"

For GM 7.5"/7.625"; 2.25" OD; 1.45" ID