The oxygen sensor installs in the upstream position on 2017-2022 Acura NSX, Honda Accord and 2020-2022 Honda CR-V. It measures the exhaust air-fuel ratio across a broad range so the engine computer can meter fuel precisely. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 250-25149 Oxygen Sensor Features:

• Fits 2017-2022 Acura NSX, Honda Accord; 2020-2022 Honda CR-V
• Engine coverage includes 2.0L I4, 3.5L V6 applications
• Sensor locations by application: B1S1, B2S1 (bank and sensor number)
• 5-wire wide-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 275 mm (10.8 in.) overall length
• Female square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue