For 1974 GMC G15/G1500 Van Drum Brake Wheel Cylinder Rear Dorman. Drum Brake Wheel Cylinder. 1974 GMC G15/G1500 Van Bore: 15/16 In. | 11.15 In. x 2.75 In. Brakes; Position: Rear;. WHEEL CYLINDER. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.
