This turbo boost leak tester kit is specially designed for quickly locating air leak points in turbocharged intake systems. The set includes a 0-80 psi mechanical pressure gauge and four pairs of nylon couplers, suitable for common intake pipe diameters from 1-3/8" to 3-1/2". Pressurizing the sealed piping and monitoring pressure retention, it allows efficient diagnosis of leaks in intercoolers, pipe connections, and other components, helping restore engine power and efficiency. | Vevor | | Turbo Boost Leak Tester Kit, 0-80 PSI Valve Gauge Range, Turbo System Leakage Tester Set with 4 Pairs | Black,Orange | Black/Orange | Best Buy