Isspro EV2 3.8-volt Mechanical Boost Gauge R14000-Style 03-09 Dodge Ram 2500 / 3500. Fits: 2003 - 2004 Ram 5.9L Cummins; 2004.5 - 2007 Ram 5.9L Cummins; 2007.5 - 2009 Ram 6.7L Cummins.
