Walker 250-25149 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

OE Oxygen Sensor for Select Honda and Acura

Walker Products OE oxygen sensor Part Number 250-25149 is an Original Equipment-style replacement built for specific upstream applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper air-fuel control on select Honda Accord, Honda CR-V, and Acura NSX models.

Key Features

• Walker Products OE line oxygen sensor for emission control applications
• Application-specific fitment and position targeting
• Supports ECU feedback for upstream sensor locations
• Built for select 2017-2022 Honda Accord, Honda CR-V, and Acura NSX vehicles
• Part number 250-25149 for catalog and service identification

Walker Products OE Line Details

Walker Products OE focuses on replacement sensors engineered for the exact vehicle application and sensor position. For this part, that means upstream oxygen sensor coverage for select Honda Accord, Honda CR-V, and Acura NSX models, including upstream left and upstream right positions where listed in the fitment data. The part number 250-25149 is intended to match the diagnostic needs of the vehicle’s engine control system.

Detailed Description

This oxygen sensor is used in emission control systems to monitor exhaust content before the catalytic converter and provide feedback to the ECU. On affected vehicles, a failing upstream sensor can contribute to poor engine performance, higher fuel consumption, increased exhaust emissions, or an illuminated malfunction indicator light. For accurate diagnosis, inspect the sensor, wiring harness, and connector for physical damage before replacement. Part Number 250-25149 is a direct-fit OE-style solution for the listed applications.

Common Issues This Part May Address

• Check engine light related to upstream oxygen sensor faults
• Rough running or inconsistent air-fuel control
• Increased fuel consumption
• Higher exhaust emissions
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the exact position before ordering, since this sensor is listed for upstream, upstream left, and upstream right applications depending on vehicle and engine configuration. Verify connector condition, harness routing, and exhaust-side damage during diagnosis. Fits 2017-2021 Acura NSX, upstream left and upstream right; fits 2022 Acura NSX, upstream right; fits 2017-2022 Honda Accord, upstream; and fits 2020-2022 Honda CR-V, upstream.

Quality Assurance

Walker Products states that its engine management and oxygen/air-fuel sensors are developed as OE replacement parts and manufactured under ISO 9001/TS 16949 quality systems. Since 1946, Walker Products has supplied engine management and fuel system components for vehicle service applications.