Locates leaks in turbo, intake and cooling system by plugging the output side of the turbo and intake side. Services Heavy Duty class 6, 7 & 8 vehicles. Air is pressurized through one end of the adapter to show the presence of leaks within the system. Kit includes a pressure gauge, shut off valve and pressure regulator. 3 pairs of stepped adapters. Included adapters sizes: 105mm / 110mm, 115mm / 120mm & 125mm / 130mm. NOTE: For standard sizes see to CTA #7912.