Isspro EV2 Electronic Fuel Rail Pressure Gauge R42000-Style. Fits: 2001 - 2004 Chevy/GMC 6.6L LB7 Duramax; 2003 - 2004 Ram 5.9L Cummins; 2004.5 - 2005 Chevy/GMC 6.6L LLY Duramax; 2004.5 - 2007 Ram 5.9L Cummins; 2010 - 2018 Ram 6.7L Cummins.
