Walker 250-24870 Oxygen Sensor - Downstream or Downstream Front

Overview of Walker 250-24870 Oxygen Sensor

The Walker 250-24870 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Prius, Highlander, and RX series. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine control unit.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Lexus and Toyota models such as Prius, RX350, and Sienna
• 20.2-inch wiring harness length for flexible installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wire gauge measurement of 20 for reliable signal transmission
• Overall length of 23.74 inches for proper fitment

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-24870) features a heated sensor element that allows for faster warm-up times and improved emissions monitoring. The sensor includes a 4-wire design, which supports both the sensor signal and heater circuit, ensuring consistent operation under various driving conditions. The wiring harness length of 20.2 inches and an overall length of 23.74 inches provide adequate reach and fitment within the engine bay. The sensor mounts via a threaded connection with an 18.0 mm diameter, compatible with the exhaust system of specific Lexus and Toyota vehicles. The radiused polygon male connector ensures a secure and precise electrical connection, reducing the risk of signal loss or disconnection.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is engineered to match the exact fit and function required by Lexus and Toyota vehicles, supporting emissions compliance and engine efficiency. Using Walker Products OE parts helps maintain the integrity of the vehicle’s emission control system.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel economy
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by ensuring proper catalytic converter operation
• Eliminates rough idling or engine hesitation caused by faulty sensors
• Prevents failed emissions tests due to sensor malfunction

Installation Notes and Tips

When installing the Walker 250-24870 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. Verify the connector shape and gender match the vehicle’s harness before installation. Thread the sensor carefully to avoid cross-threading and torque to manufacturer specifications. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper sensor operation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. This part is backed by Walker’s quality assurance protocols, providing confidence in its reliability and fitment for Lexus and Toyota vehicles. Please refer to Walker’s warranty terms for specific coverage details.