The Sealey 4 Piece Cooling System Pressure Test Kit is a professional diagnostic tool designed for testing and identifying leaks in vehicle cooling systems. This capless cooling system tester features an innovative inflatable bladder system that seals the coolant header tank or radiator, providing reliable pressure testing across a wide range of vehicles. The versatile bladder design works with both screw and bayonet fittings, offering compatibility with approximately 90% of cars and light commercial vehicles straight from the box. This broad application range makes it an essential addition to any garage or workshop equipment collection, reducing the need for multiple specialised adaptors. Supplied with two additional adaptors specifically for VAG vehicles with internal threads on the header tank, this kit extends coverage to popular Volkswagen, Audi, SEAT and Skoda models. The tester incorporates quick release couplings for efficient connection and disconnection, an easy-to-read press