Follow this link to see the time that this tool can save you.

This coolant tester allows you to find coolant leaks in the engine before you install it. If you build many engines this will undoubtedly save you a lot of time.

This kit works on 1974 - Current rotary engines including Rx8 and 20B applications.

Other coolant tester kits don't come with everything you need to plug off all areas to perform the test, this comes with all you will need to test your coolant system.