ALLSTAR PERFORMANCE Shim Kit GM 8.5in 10 Bolt 1970-98 ALL68621

ALLSTAR PERFORMANCE Differential Shim - Pinion Retainer / Pre-Load Shims - Bolts / Crush Sleeve / Pinion Nut / Shims - 8.5 in - GM 10-Bolt - Kit.
GM PASS & LIGHT TRUCK REAR AXLE W/8.50 RING GEAR. 10 BOLT W/ 30 SPLINE PINION 1971-1984.