Liquid filled gauge for setting up back pressure regulation on butterfly style exhaust brakes to ensure proper operation and possible leaks in your exhaust system that would reduce braking efficiency.

FEATURES

• Liquid filled gauge for setting up back pressure regulation on butterfly style exhaust brakes

INSTALL TIME
2 Hours 30 Minutes

EMISSIONS
This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included. (EMS:4)