The Stant tester allows you to test today's cars higher pressure cooling systems and pressure caps up to 30 pounds. The gauge includes new cap testing pressure ranges of 17-19 lbs., 20 lbs., and 28-30 lbs. The larger color coded dial makes it easy to accurately test these higher pressure caps and systems.
The head also includes a pressure release bar that, when turned clockwise, releases pressure buildup before removing the head from the neck.
The pressure tester comes in its own plastic carrying case with: one (1) 12559 spacer to drop in 1" deep filler necks for testing, one (1) 12552 cap adaptor to check standard "A" size caps, and a complete easy to use instruction manual