GM GENUINE 84554713
Fits 3.73 Rear Axle Ratio (GT4), Positraction Limited-Slip Rear Axle (G80), 8.50/8.625 Ring Gear Saginaw - American Axle; 10 Bolt Differentialor 4WD; 4.10 Rear Axle Ratio (GT5), Positraction Limited-Slip Rear Axle (G80), 8.50/8.625 Ring Gear Saginaw - American Axle; 10 Bolt Differentialor 3.08 Ratio (GU4), Positraction Limited-Slip Rear Axle (G80), 7,700 lb Vacuum Power Brakes, 8.50/8.625 Ring Gear Saginaw - American Axle; 10 Bolt Differentialor RWD; 3.23 Ratio (GU5), Positraction Limited-Slip Rear Axle (G80), 8.50/8.625 Ring Gear Saginaw - American Axle; 10 Bolt Differentialor Engine VIN 0; 3.42 Ratio (GU6), Positraction Limited-Slip Rear Axle (G80), 7,700 lb Vacuum Power Brakes, 8.50/8.625 Ring Gear Saginaw - American Axle; 10 Bolt Differential; 6 speed Automatic trans.or GAS; 3.42 Ratio (GU6), Positraction Limited-Slip Rear Axle (G80), 7,700 lb Vacuum Power Brakes, 8.50/8.625 Ring Gear Saginaw - American Axle; 10 Bolt Differential; 6 speed Automatic trans.