OTC 7215 Exhaust Back Pressure Gauge

OTC Tools OTC 7215 Exhaust Back Pressure Gauge. This exhaust back pressure gauge is a fast and easy way to read exhaust back pressure and help determine the extent of restriction. To use, simply insert the tool into the oxygen sensor hole. Large, easy-to-read gauge clearly shows pressure from 0-8 PSI. A special design tip provides more accurate pressure readings. Its stainless-steel braided tubing withstands high-heat engine conditions. A universal adapter is also included for vehicles with thermactor systems. For use on GM, Ford, Chrysler and imported vehicles.