Exhaust Back Pressure Adaptor Kit

New test kit aids in diagnosing clogged or restricted exhaust systems. Allows comparing back pressure readings ahead and behind of suspected restriction.

Kit includes small hole punch for use with an air hammer, five x 5/16" x 1/2" self tapping bolts and a test adaptor. Use self tapping bolts to plug hole after test is completed. Pressure gauge not included.

• Length: 7.1/2" (190mm).
• Note: Do not install directly into catalytic converter or muffler.