Walker 250-241119 Oxygen Sensor

OE Oxygen Sensor for GM Trucks and Vans

Walker Products OE oxygen sensor 250-241119 is a specific-fit heated sensor engineered as an Original Equipment replacement for select Chevrolet, GMC, and Hummer applications. It delivers the ECU feedback needed for accurate fuel control and emissions monitoring on vehicles such as the Chevrolet Silverado 1500 and GMC Sierra 1500.

Walker Products OE focuses on application-specific fitment, so this oxygen sensor matches the required mounting position, connector style, and wiring configuration for the listed vehicles.

Key Features

• Heated oxygen sensor for precise exhaust feedback
• Specific-fit design for the listed upstream and downstream positions
• 4-wire configuration with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for OE-style connection
• Wiring harness length: 12.32 in.; overall length: 15.87 in.

Product Details

Walker Products OE part number 250-241119 is built for emissions control systems that rely on oxygen sensor input to manage air-fuel ratio and monitor catalyst performance. This sensor is used in select 2002-2007 Chevrolet, GMC, and Hummer models, including Silverado 1500, Sierra 1500, Tahoe, Yukon, Express, Savana, and H2 applications. Fitment includes upstream left, upstream right, downstream left, and downstream right positions depending on the vehicle and engine/emissions configuration.

This part cross-references no listed aftermarket part numbers in the provided data. For shoppers searching by vehicle, this oxygen sensor is a direct-fit option for Chevrolet Silverado 1500 oxygen sensor replacement, GMC Sierra 1500 downstream oxygen sensor replacement, and Chevrolet Express 2500 upstream oxygen sensor service.

Common Issues It May Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation from inaccurate air-fuel readings
• Elevated exhaust emissions from a failing sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Verify the exact year, make, model, and sensor position before ordering. This part is a threaded, specific-fit oxygen sensor, so connector shape, wire count, and mounting location should match the original unit. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation, since damaged wiring can shorten sensor life and trigger fault codes.

For fitment reference, this sensor fits 2003-2006 Chevrolet Silverado 1500, downstream right; 2004-2007 GMC Savana 2500, upstream left; and 2003-2006 GMC Yukon, downstream left or downstream right, depending on the listed position.

Quality Assurance

Walker Products OE sensors are engineered as OE replacement components and manufactured for application-specific fitment and ECU feedback requirements. Walker Products has operated since 1946 and is an ISO 9001/TS 16949 certified automotive supplier.