OTC 7215 Exhaust Back Pressure Gauge - Now you can quickly read back pressure to determine the amount of restriction in an exhaust system with this Exhaust Back Pressure Gauge. This gauge accurately measures through the oxygen sensor hole. Its large dial clearly shows pressure from 0–8 psi. The system has a stainless steel braided tube to withstand high-heat conditions.
Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov