Replace a lost or damaged radiator cap adapter or add a new one to your existing kit with this STEELMAN 60409 Nylon NO.7 Radiator Expansion Tank Test System Adapter. This radiator cap adapter is made from precision formed nylon 6-6 to stand up to high heat as well as mechanical wear. For easy identification among similar style adapter caps, this cap features a color coded brown band around the threaded base to make it stand out. The top of the adapter has a quick-connect fitting to allow for easy attachment to hand held pressure pumps. Internally threaded, this adapter cap is designed for use on coolant expansion tanks used in specific model and model year Alfa Romeo, Citroen, Fiat, Lancia, Mini Cooper, Peugeot, Renault, Saab, Sterling, Jeep, and Volvo vehicles. Compatible with pressure pumps used in the STEELMAN 97332 Cooling System Test and 60025 Cooling System Test and Purge / Refill Kits.