Pressurizes motorcycle cooling systems to check for leaks Tests radiator and radiator cap for leaks and correct pressure release limit Type-A kit, specified range is most commonly found on Japanese manufactured radiators and can also be found on some late-model water-cooled American V-Twins Type-A kit, is designed to work on radiator necks ranging from 15. 75mm - 20mm Type-B kit, specified range is most common on European manufactured radiators Type-B kit, is designed to work on radiator necks ranging from 20mm to 24. 5mm Use with a common hand pump to pressurize a non-running system (pump not included) Unique design allows you to test the cooling system on a running engine to check for leaks or excessive pressure when system is hot Remote, accurate, easy to read gauge makes readings and diagnosis easy Unique radiator adapter will work with most motorcycle, ATV and UTV applications equipped with a 30mm spout Adapter also available separately Designed by Motion Pro.