Eaton EAT912A556 Detroit Truetrac 28 Spline C-Clip for GM 8.5 in. 2.73 Up Gear

All GM 8.5/8.6Eaton differentials require special bearings. For 28 spline axles with small bearing bores (race O.D. of 2.89), usually found on vehicles prior to 1999, bearing LM-102949 and race LM-102911 are required. For 30 spline axles with large bearing bores (race O.D. of 3.06), usually found on vehicles from 1999 to present, bearing LM-603049 and race LM-603012 are required.Note: 1998 - Earlier use 873-D1585 Spool Bearings, 1999 - Later use 873-D1582 Spool Bearings