1986 GMC Pick-up Truck Differential Carrier K2500 - 4WD - GM 10.5 in Rear - Yukon Grizzly Locker - 30 Spline - Installs into Standard Open Carrier Case - Diffenetial has 14 Bolt Cover & Removable Pinion Support - Rear guaranteed to replace your current 1986 GMC Pick-up Truck Differential Carrier K2500 - 4WD - GM 10.5 in Rear - Yukon Grizzly Locker - 30 Spline - Installs into Standard Open Carrier Case - Diffenetial has 14 Bolt Cover & Removable Pinion Support - Rear. 1986 GMC Pick-up Truck Differential Carrier comes new OEM 1986 GMC Pick-up Truck Differential Carrier aftermarket new 1986 GMC Pick-up Truck Differential Carrier of remanufactured 1986 GMC Pick-up Truck Differential Carrier K2500 - 4WD - GM 10.5 in Rear - Yukon Grizzly Locker - 30 Spline - Installs into Standard Open Carrier Case - Diffenetial has 14 Bolt Cover & Removable Pinion Support - Rear.