Auto Meter 3670 Sport-Comp II 2-1/16" Wideband Air/Fuel Ratio Analog Gauge 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 Auto Meters 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