NTK O2 sensors are designed specifically for OEM applications Supplied with a factory-fitted OE connector for easy installation Optimizes emissions and fuel economy Extensively tested during manufacturing to guarantee quality and reliability Refer to Amazon confirmed fit to verify upstream, downstream, bank 1 or bank 2 position for your vehicle Disconnect wiring harness from old sensor. Remove any hardware or clips, if applicable. Use an oxygen sensor socket to remove the old sensor.