O2 Oxygen Sensor+52mm Air Fuel Ratio Gauge for Hyundai Accent Kia Rio

O2 Oxygen Sensor + 52mm Air Fuel Ratio Gauge for Hyundai Accent Kia Rio Item Details: A. Digital Volt & Digital LED Air Fuel Ratio Gauge AFR Readout: Between 20-10 AFR Volt Reads Between 8-16V Blue Digital Read out Smoke Lens Fit: 12V gas oil Cars NOTE: 1.When powered on digital gauge will read the voltage for 1 minute and switch to Air Fuel Ratio. 2.It will only switch back to voltage if there is a decrease or increase B. O2 Oxygen Sensor Placement on Vehicle: Front Part Number:3921022610 / 39210 22610 / 39210-22610 Fitment: for Hyundai Accent 1999-2010 for Kia Rio 2005-2011 for Kia Rio 5 2006-2011 NOTE: The output voltage of this O2 Oxygen sensor is only two: 0.1V and 0.9V, so it only can show the working status :"LEAN" and "RICH" the digital display of this air fuel ratio gauge will only can show the number like 19 or 11(Represents the working status is LEAN or RICH) Package Include (2 Options): 1 x 52mm Air Fuel AFR Gauge OR 1 x Front O2 Oxygen Sensor