Detroit Locker Detroit Locker - GM 8-7/8 12-Bolt 30-Spline DET187C197A

Differential Carrier - Detroit Locker - 30 Spline - 3.08 to 3.90 Ratio - Steel - 8.875 in - GM 12-Bolt - Each

Drivetrain, Differentials and Rear-End Components, Differentials and Differential Carriers by DETROIT LOCKER-TRACTECH