Test for clogged or obstructed catalytic converters and mufflers with S & G Tool Aid's Exhaust Back Pressure Tester, No. 33600. The tool comes fast and easy to use, simply threading into the oxygen sensor port. The kit includes 12mm and 18mm adapters to fit most domestic and imported vehicles. The gauge measures 2 1/2" in diamter and has a dual scale: 15 psi and 1.00 kg/cm2. The hose comes 41" long and it with the tool can be placed in a vinyl pouch for store display and toolbox storage.
