Exhaust Back Pressure Tester Reads Thru Oxygen Sensor Port
Now there's a fast, easy way to read exhaust back pressure to help determine the extent of restriction. Simply insert the No. 7215 into the oxygen sensor hole. Large, easy-to-read gauge clearly shows pressure from 0-8 PSI. Specially designed tip provides more accurate pressure reading while stainless steel braided tube 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.
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