Features: 1. Application: Fits for GM 6.6L Duramax engines for Diesel fuel pressure and vacuum testing 2. Function: Gauge assembly with 6-ft Hose and quick coupler, providing a simple and convenient solution to testing your low-pressure fuel and vacuum systems in one gauge. 3. Specification: Equipped with a 3-1/2" gauge reading from 30 inHg to 15 PSI. 4. High Quality: Premium brass parts are sturdy, non-rusting, and the reinforced rubber gauge hose endures torsion, temperature and pressure to provide a long lasting service life. .
