30-4110 Wideband Gauge Controller AFR O2 Air Fuel Ratio 2 1/16" 52mm Gauge Kit
Fits BMW Mini R55 R56 R57 Cooper S 16117222330 Fuel Filler Cap Petrol Models. ※The AFR gauge monitoring tool provides accurate data that is essential to a safe and powerful tune. ※Gauge Display/0-5V Output Gasoline values from 10:1 to 20:1 AFR.