Walker 250-24274 Oxygen Sensor - Downstream Left

Overview of Walker Products OE Oxygen Sensor 250-24274

The Walker Products OE Oxygen Sensor 250-24274 is designed specifically for select Chevrolet and GMC heavy-duty trucks and SUVs. This heated oxygen sensor ensures accurate emissions control and optimal engine performance for vehicles like the Chevrolet Silverado 2500 HD and GMC Sierra 3500.

• Heated oxygen sensor with 4-wire design for precise readings
• Specific fit for Chevrolet and GMC 2500 and 3500 series trucks and SUVs
• 19.21-inch wiring harness length with 20 gauge wire for reliable connectivity
• Threaded mounting type with 18.0 mm thread diameter for secure installation
• Radiused polygon female connector for exact OEM compatibility
• Overall length of 22.76 inches to fit factory specifications

Detailed Product Features and Specifications

This Walker Products OE oxygen sensor (part number 250-24274) is engineered as a heated sensor, which allows it to reach operating temperature quickly for faster and more accurate oxygen level readings. The sensor features a 4-wire configuration, including a heating element, which improves response time and durability. The wiring harness length measures 19.21 inches, using 20 gauge wire to maintain signal integrity and withstand engine bay conditions.

The sensor is designed for specific fitment, compatible with Chevrolet Avalanche 2500, Silverado 2500 HD, Silverado 3500, Suburban 2500, and GMC Sierra 2500 HD, Sierra 3500, and Yukon XL 2500 models. It includes a radiused polygon female connector that matches OEM specifications, ensuring a secure and reliable electrical connection. The threaded mounting type with an 18.0 mm thread diameter allows for straightforward installation in the factory sensor port. The overall length of 22.76 inches aligns with original equipment dimensions.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering direct-fit emission control components that meet original equipment standards. This oxygen sensor is part of that line, providing a precise replacement that maintains factory performance and emissions compliance. Walker Products OE parts are designed to integrate seamlessly with vehicle systems, reducing installation complexity and ensuring consistent operation.

Common Applications and Issues Addressed

• Restores accurate air-fuel mixture readings for improved fuel efficiency
• Helps resolve check engine light codes related to oxygen sensor failure
• Reduces emissions by ensuring proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors
• Prevents increased exhaust emissions and failed emissions tests

Installation Notes and Tips

When installing the Walker Products OE oxygen sensor 250-24274, ensure the vehicle is cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the connector type matches the factory harness before installation. Thread the sensor by hand initially to avoid cross-threading, then tighten to manufacturer torque specifications. Inspect wiring for damage and secure the harness to prevent contact with hot or moving parts.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. This ensures reliability and peace of mind when replacing emission control sensors on Chevrolet and GMC heavy-duty trucks and SUVs.