1965-77 Buick Skylark and GS models

1964 Oldsmobile 300 engines

1965-77 Oldsmobile all models

Correct AC Delco reproduction radiator cap with solid rivet and correct markings.

1957-68 Buick all models except 1963 Invicta & Wildcat with A/C

1969 Buick all models except those with coolant recovery

1961-73 Buick Skylark and GS models without Coolant Recovery System

1960 Cadillac all models with A/C

1961-68 Cadillac all models except those with coolant recovery

1957-60 Oldsmobile all models with A/C

1961-73 Oldsmobile all models except those with coolant recovery