OEM gauges typically read three things: cold, warmed up and "shut it off" (with the last reading sometimes coming too late). Eliminate the guesswork on your high-performance racecar or off-road vehicle with AEM Digital Gauges. They combine unsurpassed accuracy, speed, and control with an easy-to-read digital LED interface. AEM Digital Gauges have a bright, three-digit LED display and a sweeping LED "needle" that lines the edge of the gauge face. Each gauge includes a 0-5V analog output for use with data loggers and virtually any engine management system. It also includes interchangeable silver and black bezels and black and white faceplates to personalize the look of your gauge. It's like having 4 gauge designs in one!