Standard Motor Products VC181 Vacuum Control
SMP VC-181 Standard Distributor Vacuum Advance Control fits 1974 - 1971 American Motors Ambassador; 1973, 1970 - 1965 Chevrolet Bel Air; 1969 - 1967, 1965 Chevrolet Biscayne; 1974 - 1973 Chevrolet Blazer; 1974 - 1973, 1970 - 1968 Chevrolet C10 Pickup; 1974 - 1973, 1970 - 1968 Chevrolet C10 Suburban; 1974 - 1973, 1