Features 1. APPLICATION: Use for Diesel fuel pressure and vacuum testing on GM 6.6L Duramax engines. 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. FEATURE: 3-1/2" gauge reads 30 inHg to 15 PSI 4. SUPERIOR MATERIAL: 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. .
