Unique three dimensional dial design gives added depth and style to your custom dash. Over 320" of pointer movement adds dial scale and resolution providing the most accurate reading in an analog dial. Features metric and imperial scalings for easily relatable readings on applications around the world without the need for mental unit conversions. Modern white LED through-the-dial lighting provides clear visibility during nighttime use. Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU4.2 Sensor 8ft. wiring harness 304 stainless steel weld-in bung mounting hardware and detailed instructions for installation. Autometers Race Proven Digital Stepper Motor Electric Instruments Provide Unmatched Accuracy Which Is Further Increased By Utilizing A Self Calibration Sequence During Power Up. Display range of 8:1 to 18:1. Suitable for use with gasoline powered engines. 12 and 16 volt compatible compatible with nearly every street car or race car electrical system