Part Type: Drum Brake Wheel Cylinder. 1974 GMC C15/C1500 Pickup Bore: 1.1875 In.; Position: Rear;. Manufacturer: Dorman. Position: Rear. Brake Component Inlet Thread Size: 3/8-24 IN. To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in theCompatibility Table.
