GlowShift Black 7 Color 30,000 PSI Fuel Rail Pressure Gauge - For 2002-2017 6.6L Chevy Duramax & 2003-2017 5.9L / 6.7L Dodge Cummins Diesel Trucks - Black Dial - Clear Lens - 2-1/16" 52mm 2 1/16 Inch (52mm) Black Face Gauge with a Magnified Lens Fuel Pressure Reading from 0 to 30,000PSI 7 Solid Color Settings and Two Color Cycle Modes with Dimmer Function that Allows the Gauge to Dim 30% Mounting Hardware & Installation Instructions Free Lifetime Technical Support & One Year Limited Warranty