Lang Three-Way Exhaust Back Pressure Kit allows quicker and more accurate testing of exhaust blockages in catalytic converters, mufflers, etc. The Lang Three-Way Exhaust Back Pressure Kit features a 2 1/4” special gauge with two multi-colored bands for measuring at idle and 2500 RPM, with measurements in PSI and bar. The Lang kit includes a boot included on the gauge for extra protection, and a 6′ hose, enough length for the technician to test from the drivers seat.

The Lang Three-Way Exhaust Back Pressure Kit can test in three different places: The oxygen sensor, Exhaust pipes, and the air injection system.