Top off your 1966 Ford Mustang’s cooling system with a high-quality radiator cap that combines function and classic style. Designed to maintain proper pressure and ensure optimal coolant flow, our radiator caps are engineered to fit perfectly and perform reliably under heat and pressure. Whether you're cruising on a summer day or pushing your pony to the limit, a dependable radiator cap is essential to prevent overheating and coolant loss. Choose from factory-correct reproductions for authentic restorations or performance upgrades for enhanced cooling efficiency. Keep your Mustang cool and running strong with a cap that seals the deal.