Walker 250-54052 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker 250-54052 Oxygen Sensor for Toyota Vehicles

The Walker Products OE 250-54052 oxygen sensor is designed specifically for Toyota 4Runner, Tacoma, and Tundra models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for Toyota 4Runner, Tacoma, and Tundra
• 14.09-inch wiring harness length for convenient installation
• Radiused polygon male connector for secure electrical connection
• Flange mount with 18.0 mm thread diameter for proper sensor placement
• Wire gauge measurement of 20 for durability and signal integrity
• Overall length of 17.64 inches to fit OEM specifications

Walker Products OE Line and Part Specifications

The Walker Products OE line focuses on delivering emission control components that meet or exceed original equipment standards. The 250-54052 oxygen sensor is engineered to match the exact fit and function required by Toyota 4Runner, Tacoma, and Tundra models, ensuring compatibility and reliable performance. This sensor's heated design allows for faster warm-up times, improving emissions control during cold starts.

Detailed Product Description

This oxygen sensor features a 4-wire heated design, which includes two wires for the heating element and two for the sensor signal, enhancing responsiveness and accuracy. The wiring harness length of 14.09 inches provides sufficient reach for installation without excess slack. The radiused polygon male connector ensures a secure and precise electrical connection, reducing the risk of signal loss or corrosion. The flange mount with an 18.0 mm thread diameter allows for straightforward replacement in the designated mounting location on compatible Toyota models. The wire gauge of 20 supports durability and consistent signal transmission, while the overall length of 17.64 inches aligns with OEM specifications for proper fitment.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved engine efficiency
• Helps resolve check engine light triggers related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter function
• Improves fuel economy by providing precise sensor data to the ECU
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Walker 250-54052 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness or connector. Confirm the radiused polygon male connector aligns correctly with the vehicle’s wiring harness. Apply anti-seize compound to the sensor threads if recommended by the vehicle manufacturer to facilitate future removal. Verify the sensor is securely flange-mounted and wiring is routed away from heat sources or moving parts.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 250-54052 part undergoes rigorous testing to comply with OEM specifications for Toyota 4Runner, Tacoma, and Tundra models. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to provide confidence in product reliability.