The CTA Turbo System Leakage Tester Kit, No. 7912, is ideal for vacuum leak detection. It locates air leaks in the components by plugging the output side of the turbo and plugging the intake inlet side. Air is applied through one end of the adapter to show the presence of leaks within the system. The kit features a pressure gauge, shut off valve, and pressure regulator. It comes with six pairs of stepped adapters to fit most size hoses. Sizes range from 16mm to 90mm in diameter. This setup can also be used on cooling system hoses.