Auburn Gear

Your Source for GM Truck Differentials

Transtar is proud to carry Auburn Gear’s flagship line of limited slip differentials. Their High Performance Series give you smooth torque-sensing operation with the correct bias ratios to outperform the competition.

GM 8.6" 10 BOLT 30 SPLINE HP LIMITED SLIP DIFFERENTIAL

Transtar Part #: 742G715F

Years:
1999-2008

Applications:
Silverado, Sierra 1500, & Full Size SUV’s

GM 8.5" 10 BOLT 28 SPLINE HP LIMITED SLIP DIFFERENTIAL

Transtar Part #: 742G715D

Years:
1972-1987

Applications:
GM 1/2 Ton, Suburban, Blazer, and Jimmy

GM 8.6" 10 BOLT 30 SPLINE HP LIMITED SLIP DIFFERENTIAL

Transtar Part #: 742G715E

Years:
1988-1999

Applications:
Silverado, Sierra 1500, & Full Size SUV’s

GM 7.5" 10 BOLT 28 SPLINE HP LIMITED SLIP DIFFERENTIAL

Transtar Part #: 741A715C

Years:
1988-2003

Applications:
S-series Truck and SUV’s

GM 8.875" 12 BOLT 28 SPLINE HP LIMITED SLIP DIFFERENTIAL

Transtar Part #: 742J715

Years:
1964-1982

Applications:
GM 10/20/30 series Truck, Suburban, Blazer and Jimmy

order parts

FAQ

In addition to the Auburn additive being included with every Auburn Carrier, we also stock it separately. Part #: 504102 works for all Auburn limited slip and ECTED Max differential carriers.
No. Synthetic gear oil is not recommended as it reduces the necessary friction for the differential to operate correctly.
The HP series is for daily driver applications where the smoothest operation is desired. The Pro Series is the best choice when additional traction is more important than smoother operation. The Pro Series has a higher bias between the right and left wheels, which is achieved with stiffer springs inside the differential.
The ECTED Max operates like a limited slip when the “Locker” is not engaged. Most other lockers operate as an open differential when they are not engaged.