Designed to test automotive cooling systems., Machined metal construction Motorad / Stant [12453] Radiator Cap/Cooling System Tester Adapter Radiator Cap/Cooling System MotoRad Tester Adapter For Ford MotoRad 3043 Cooling System Tester Adapter - Ford F-150 (15 MotoRad 3043 Adapter MotoRad 3043 is a threaded radiator cap adapter for cooling system pressure testing. It is designed for use with MotoRad MT-300 and 9300 pressure testers and fits vehicles that use an M52 x 2.5 filler neck, including many late model Ford vehicles and Mazda 3. This listing is a single adapter Made from high quality materials to ensure durability. The MT-300 cooling system pressure tester is the professionals' choice when it comes to testing vehicle cooling systems and coolant caps Tester adapter for the 9300 and MT-300 cooling system pressure testers.