This is a brand new 1955 1956 1957 Chevrolet 150, 210 and Bel Air V8 only throttle arm with bushing and pinch bolt. This arm will NOT work on a 6 cylinder. This throttle arm is the part that runs up the firewall on the engine side and the carb linkage rod would hook to this. This arm fits all models of 55-57 Chevy passenger cars with a V8 engine. Sku # 3695