Features and Benefits:

• Aids in diagnosing clogged or restricted exhaust systems
• Allows comparing backpressure readings ahead and behind of suspected restriction
• Ideal for diagnosing clogged catalytic converters, collapsed exhaust pipes, etc.
• Kit includes small hole punch for use with air hammer, 5/16" x 1/2" self-tapping bolt and test adapter
• Use self-tapping bolts to plug hole after test is completed

Gauge not included.