This brake master cylinder is precision-engineered to match the design, function, and performance of the original master cylinder on specific vehicle years, makes and models. It is made of new, high-quality materials for a safe, durable replacement. Vehicle model years this part fits: Chevrolet C40: 1967, 1968, 1969 Chevrolet C400: 1967, 1968, 1969 Chevrolet C4000: 1967, 1968, 1969 Chevrolet C50: 1967, 1968, 1969 Chevrolet C500: 1967, 1968, 1969 Chevrolet C5000: 1967, 1968, 1969 Chevrolet S60: 1967 Chevrolet S600: 1967 Chevrolet S6000: 1967 Chevrolet S65: 1967 Chevrolet S6500: 1967 GMC C40: 1967, 1968, 1969 GMC C400: 1967, 1968, 1969 GMC C4000: 1967, 1968, 1969 GMC C50: 1967, 1968, 1969 GMC C500: 1967, 1968, 1969 GMC C5000: 1967, 1968, 1969 GMC S60: 1967 GMC S600: 1967 GMC S6000: 1967 GMC S65: 1967 GMC S6500: 1967