Walker 250-24612 Oxygen Sensor

Walker Products OE Oxygen Sensor for GM Applications

Walker Products OE 250-24612 is a heated oxygen sensor built for specific downstream and upstream applications across select Buick, Chevrolet, Cadillac, Saab, and Pontiac vehicles. It is engineered as an OE-style replacement with the correct fitment position, connector style, and ECU feedback for the listed applications.

Key Features

• Heated oxygen sensor for precise exhaust monitoring
• Specific fit design for confirmed vehicle applications
• 4-wire configuration with 20-gauge wiring
• Female connector with radiused polygon shape
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 13.31 in.; overall length: 16.85 in.

Product Details

Walker Products OE 250-24612 is part of the Walker Products OE line, which focuses on original-equipment replacement sensors for vehicle-specific engine management needs. This oxygen sensor is designed to deliver the diagnostic feedback the ECU expects on the listed applications, including downstream bank 1 sensor 2 coverage on many Chevrolet Cruze, Chevrolet Sonic, Chevrolet Trax, and Buick Encore models. It also covers select upstream and downstream positions for Cadillac SRX, Saab 9-5, and Pontiac G8 applications.

For shoppers searching for a downstream oxygen sensor for 2010-2015 Chevrolet Cruze, a downstream O2 sensor for 2012-2020 Chevrolet Sonic, or an OE replacement oxygen sensor for 2013-2021 Buick Encore, this part number provides a direct-fit solution for the confirmed positions. Part number 250-24612 is also referenced for select 2010-2011 Cadillac SRX and 2010-2011 Saab 9-5 upstream or downstream applications, depending on vehicle configuration.

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

Common Symptoms This Sensor May Address

• Check engine light or malfunction indicator light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Higher fuel consumption from inaccurate air-fuel monitoring
• Increased exhaust emissions from a failing sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Verify the exact position before installation: downstream, upstream, downstream right, or downstream left, depending on the vehicle. Confirm connector shape, wire count, and thread diameter against the original sensor before replacement. Inspect the sensor wiring harness and connector for damage, since physical wear can shorten service life and affect signal quality. For best results, match the application to the vehicle’s engine and sensor location listed in the fitment data.

Quality Assurance

Walker Products has produced engine management and fuel system components since 1946 and operates as an ISO 9001/TS 16949 certified company. The Walker Products OE line is built around application-specific replacement parts for vehicles that require accurate ECU feedback and OE-style fitment.

Compatible Vehicles

• Fits 2013-2021 Buick Encore, downstream bank 1 sensor 2.
• Fits 2014-2021 Chevrolet Trax, downstream bank 1 sensor 2.
• Fits 2012-2020 Chevrolet Sonic, downstream bank 1 sensor 2.
• Fits 2016 Chevrolet Cruze Limited, downstream bank 1 sensor 2.
• Fits 2010-2015 Chevrolet Cruze, downstream bank 1 sensor 2.
• Fits 2013 Chevrolet Trax, upstream.
• Fits 2010-2011 Cadillac SRX, upstream.
• Fits 2010-2011 Cadillac SRX, downstream.
• Fits 2010-2011 Saab 9-5, upstream.
• Fits 2008-2009 Pontiac G8, downstream right.
• Fits 2008-2009 Pontiac G8, downstream left.