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Protect your classic GM vehicle's engine with this genuine Stant R-17 Radiator Cap. This is a vintage New Old Stock (NOS) part. Rated at 15 PSI, it is the correct pressure specification for many General Motors vehicles from the late 1950s and 1960s, particularly those with air conditioning or heavy-duty cooling systems.
This part is designed for the radiator filler neck on specific 1957-1966 Buick, Cadillac, Oldsmobile, and Pontiac vehicles requiring a 15lb cap.
| Make | Model | Year | Notes |
| Buick | All Models | 1957-1966 | 15 PSI Systems |
| Buick | Special, Skylark | 1961-1966 | 15 PSI Systems |
| Cadillac | All Models | 1964-1966 | 15 PSI Systems |
| Oldsmobile | 88, 98, Starfire | 1961-1966 | 15 PSI Systems |
| Oldsmobile | F-85, Cutlass | 1961-1966 | 15 PSI Systems |
| Pontiac | Catalina, Bonneville, Grand Prix | 1962-1966 | 15 PSI Systems |
| Pontiac | Tempest, LeMans, GTO | 1961-1966 | 15 PSI Systems |
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
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Please Note: All vehicle fitment data is manually researched from vintage catalogs. While we strive for accuracy, historical data can sometimes be imperfect. We strongly encourage you to perform your own due diligence by comparing our provided photos and specifications to your original part to ensure proper fitment before purchasing.