Walker 250-24277 Oxygen Sensor - Downstream or Downstream Front

Overview of Walker 250-24277 Oxygen Sensor for Lexus and Toyota

The Walker 250-24277 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Highlander, RX300, and Supra. 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 Lexus Highlander, Toyota RX300, and Toyota Supra
• 17.64-inch wiring harness length with 22-gauge wire for durability
• Radiused polygon male connector for secure and precise connection
• Flange mount with 18.0 mm thread diameter for proper installation
• Overall length of 21.18 inches to accommodate factory mounting locations

Detailed Features and Specifications

This oxygen sensor from Walker Products OE features a heated sensor type that allows for faster warm-up times and improved emissions control under various operating conditions. The 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent sensor performance. The wiring harness length of 17.64 inches and 22-gauge wire measurement provide a balance of flexibility and durability, suitable for the specific routing requirements of the Lexus Highlander, Toyota RX300, and Toyota Supra.

The sensor’s radiused polygon male connector is designed to match factory specifications, ensuring a secure and corrosion-resistant connection. The flange mount style with an 18.0 mm thread diameter allows for straightforward installation in the designated exhaust system location. With an overall length of 21.18 inches, this sensor fits precisely without the need for modifications.

Walker Products OE Brand Line

Walker Products OE is a product line focused on delivering original equipment quality parts that meet or exceed OEM standards. This oxygen sensor is engineered to provide reliable emissions control and durability consistent with factory specifications. Choosing a Walker Products OE sensor helps maintain the integrity of your vehicle’s emissions system and supports compliance with environmental regulations.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved engine efficiency
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by ensuring proper catalytic converter function
• Prevents rough idling and poor fuel economy caused by faulty sensors
• Supports smooth engine performance and drivability in Lexus Highlander, Toyota RX300, and Supra

Installation Notes and Tips

When installing the Walker 250-24277 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 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. Confirm the flange mount is securely tightened to the specified torque to prevent exhaust leaks.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. This part is backed by Walker’s quality assurance processes, providing confidence in fitment and function. Warranty coverage details should be confirmed with the product documentation or supplier.