Engineered for cooling system diagnostics, this radiator cap testing adapter connects to a pressure tester to evaluate cap performance on European vehicles. It utilizes M 48 x 3 thread specifications for a secure fit on Audi, Porsche, and Volkswagen Cabriolet models originally equipped with a 10225 radiator cap. The adapter supports service on Audi models from 1978 to 2000 and Porsche models from 1980 to 1998.

Engineered for cooling system diagnostics, this radiator cap testing adapter connects to a pressure tester to evaluate cap performance on European vehicles. It utilizes M 48 x 3 thread specifications for a secure fit on Audi, Porsche, and Volkswagen Cabriolet models originally equipped with a 10225 radiator cap. The adapter supports service on Audi models from 1978 to 2000 and Porsche models from 1980 to 1998.