Walker 250-241279 Oxygen Sensor - Downstream Front

OE Oxygen Sensor for Acura RLX

Walker Products OE oxygen sensor Part Number 250-241279 is an Original Equipment-style replacement for select 2018-2020 Acura RLX applications. It is built for the specified mounting position and provides the ECU with the diagnostic feedback needed for proper engine management.

Key Features

• Walker Products OE line oxygen sensor for emission control systems
• Application-specific fitment for the downstream front position
• Designed for 2018-2020 Acura RLX, downstream front
• Supports ECU feedback for oxygen and air-fuel monitoring
• Part Number 250-241279 for accurate catalog matching

Detailed Description

Walker Products OE sensors are engineered as direct replacement components for many vehicle applications worldwide. This oxygen sensor is specified for the downstream front location on the Acura RLX, including B2S2 applications, where the ECU relies on sensor input to monitor exhaust system performance and emissions-related operation. The Walker Products OE line focuses on application-specific fitment, so the sensor, connector, and harness layout are matched to the intended vehicle position. Part Number 250-241279 is the correct reference when searching for a 2018-2020 Acura RLX downstream front oxygen sensor.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by inaccurate exhaust feedback
• Increased fuel consumption from faulty sensor readings
• Elevated exhaust emissions from a worn sensor
• Stored ECU fault codes tied to the downstream front sensor circuit

Installation Notes and Tips

Confirm the vehicle is a 2018, 2019, or 2020 Acura RLX and verify the downstream front, B2S2 position before installation. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear, since damaged wiring can shorten sensor life and affect readings. Compare the old sensor’s connector and routing to the replacement before final installation.

Quality Assurance

Walker Products has produced engine management and oxygen/air-fuel sensors since 1946 and manufactures this OE replacement under Automotive ISO9001/TS 16949 quality systems. Part Number 250-241279 is built for the specified application and diagnostic feedback requirements of the vehicle ECU.