Big A 17-8640 Exhaust Back Pressure Gauge Tester Tool - 0-5 PSI, Ashcroft USA

BIG A 17-8640. Condition: New.

Made in USA.
exhaust back pressure gauge, inserts into the oxygen sensor hole. Large, easy-to-read gauge clearly shows pressure from 0-5 PSI. . For use on GM, Ford, Chrysler and
imported vehicles.