1974 GMC Pick-up Truck Differential Carrier C25/C2500 Pickup - GM 10.5 in. Full Float Rear - 14 Bolt Cover - Standard Open Carrier Case - 4.10 And Down Carrier Break - 4.125 in. Deck Height - Bare w/o Internal Gears - Rear guaranteed to replace your current 1974 GMC Pick-up Truck Differential Carrier C25/C2500 Pickup - GM 10.5 in. Full Float Rear - 14 Bolt Cover - Standard Open Carrier Case - 4.10 And Down Carrier Break - 4.125 in. Deck Height - Bare w/o Internal Gears - Rear. 1974 GMC Pick-up Truck Differential Carrier comes new OEM 1974 GMC Pick-up Truck Differential Carrier aftermarket new 1974 GMC Pick-up Truck Differential Carrier of remanufactured 1974 GMC Pick-up Truck Differential Carrier C25/C2500 Pickup - GM 10.5 in. Full Float Rear - 14 Bolt Cover - Standard Open Carrier Case - 4.10 And Down Carrier Break - 4.125 in. Deck Height - Bare w/o Internal Gears - Rear.