Quick Cars LED backlit Oil Pressure, Water Temperature, and Fuel Pressure standard mechanical gauges mounted in a checkered flag designed panel measuring 10-1/2” wide and 4-1/2” tall. Panel comes complete with all sending units, warning lights, and wiring to complete the installation. Water Temp. gauge comes with a 1/2”-NPT adapter to mount in the intake of almost any high-performance engine while both Oil and Fuel Pressure have a standard 1/8”-NPT fitting for plumbing lines (sold separately). Warning lights activate when Oil Pressure drops below 20 PSI, Water Temp. goes above 235°F, and Fuel Pressure goes below 4 PSI.