Diagnosing cooling system leaks and pressure cap failures is far easier with the right equipment and the VS0031 from Sealey is designed to make the job straightforward on a wide range of vehicles. At the heart of this kit is an inflatable bladder pressure head that seals directly to the radiator or header tank, removing the need for multiple rigid adaptors. The bladder system works with both screw and bayonet fittings, covering 90% of cars and light commercial vehicles straight out of the box. It is also suitable for motorcycles, off-road and marine applications, making it a genuinely versatile addition to any workshop. The kit includes a full set of double-ended adaptors for testing pressure caps across a broad range of applications, including Standard Bayonet fittings (Ford, GM N-Body), External Thread (Jeep, Saab, VW/Audi), Internal Thread for small Japanese deep and shallow fittings as well as late model VW/Audi, External Thread for late model BMW, Land Rover and Mercedes, plus uni