GM 10 & 12 Bolt

GM 8.5 28 spline Auburn standard posi unit- 1971 to 1988 (fits 2.73 and up gear) ApplicationChevy 8.5 10 Bolt Bolt Rear EndUsing a 2.73 or numerically higher gear set DescriptionAuburn HP Series 28 Spline Posi UnitA perfect replacement for worn-out OEM...

GM 8.5 30 spline Auburn standard posi unit- 1989 to 1998 (fits 2.73 and up gear) ApplicationChevy 8.5 10 Bolt Bolt Rear EndUsing a 2.73 or numerically higher gear set DescriptionAuburn HP Series 30 Spline Posi UnitA perfect replacement for worn-out OEM...

GM 7.5 26 spline Auburn Standard posi unit- 1976 to 1988 (fits 3.23 and up gear) ApplicationGM 7.5 10 Bolt Bolt Rear EndUsing a 3.23 or numerically higher gear set DescriptionAuburn HP Series 26 Spline Posi UnitA perfect replacement for worn-out OEM...

GM 7.5 28 spline Auburn standard posi unit- 1988 to present (fits 3.23 and up gear) ApplicationGM 7.5 10 Bolt Bolt Rear EndUsing a 3.23 or numerically higher gear set DescriptionAuburn HP Series 28 Spline Posi UnitA perfect replacement for worn-out OEM...

GM 8.5 28 spline Auburn Pro posi unit- 1970 to 1988 (fits 2.73 and up gear) ApplicationChevy 8.5 10 Bolt Bolt Rear EndUsing a 2.73 or numerically higher gear set DescriptionAuburn Pro Series 28 Spline Posi UnitContains larger cones than their HP...

GM 7.5 26 spline Auburn Pro posi unit- 1976 to 1988 (fits 3.23 and up gear)ApplicationChevy 7.5 10 Bolt Bolt Rear EndUsing a 3.23 or numerically higher gear set DescriptionAuburn Pro Series 26 Spline Posi UnitContains larger cones than their HP series...

Eaton HD clutch GM 8.5 / 28 spline / 01-085728 /2.73-up ApplicationChevy 8.5 10 Bolt Bolt Rear EndUsing a 2.73 or numerically higher gear set NoteRequires special side bearings & races DescriptionEaton Heavy Duty 28 Spline Posi UnitA perfect...

Eaton HD clutch GM 8.5 / 30 spline / 01-085530 /2.73-up ApplicationChevy 8.5 10 Bolt Bolt Rear EndUsing a 2.73 or numerically higher gear set NoteRequires special side bearings & races DescriptionEaton Heavy Duty 30 Spline Posi UnitA perfect...

Eaton HD clutch GM 12 blt car / 30 spline / 01-088530H / 3.90-down ApplicationChevy 12 Bolt Passenger CarUsing a gear set requiring a 3 series carrier DescriptionEaton Heavy Duty 30 Spline Posi UnitA perfect replacement for worn-out OEM clutch...

Eaton HD clutch GM 12 blt car / 30 spline / 01-088530 / 4.11-up ApplicationChevy 12 Bolt Passenger CarUsing a gear set requiring a 4 series carrier DescriptionEaton Heavy Duty 30 Spline Posi UnitA perfect replacement for worn-out OEM clutch differentials...