Replacement Car Exhaust Back Pressure Tester Gauge Meter DiagnosticTool Catalytic Converter Clog Test Gauge Kit
- Car Exhaust System Back Pressure Tester Meter Diagnostic Tool Exhaust System Diagnostic Tool Exhaust Back Pressure Tester.
- Adaptor fits into oxygen sensor hole enabling back pressure of mufflers and catalytic converters.
- Gauge adapter threads into oxygen sensor ports (both 12mm and 18mm). Test at idle and at2500 rpm's. Pressure should be below 1.25psi at idle and below....
- Higher readings indicate a restriction which should be corrected..
- Package including? 1* SET OF Car Exhaust System Back Pressure.