Review on 🚗 Lichamp Car A/C R1234YF R134A Adapters: Quick Couplers Connectors Kit for AC R134 R1234 R 134A 1234YF by Jon Larjin

As others have said, the high port is junk, doesn't seal the system, causes vacuum leaks, and actually doesn't give correct readings. Benefit of the Doubt: I thought it might be my gauge manifold so I plugged port 134 into one of my other cars and there is no leak, attach these adapters (on a 2020 Dodge Journey) and there is a leak through the adapter. Please save yourself the headache, now I'm sitting here waiting for another manufacturer and hoping for the best.