Walker 250-24837 Oxygen Sensor - Downstream or Downstream Rear

Overview of Walker 250-24837 Oxygen Sensor

The Walker 250-24837 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Highlander, RX350, RX400h, and RX450h. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for Lexus and Toyota Highlander, RX350, RX400h, and RX450h
• 23.15-inch wiring harness length with 20-gauge wire for durability
• Radiused polygon female connector for secure and proper connection
• Threaded mounting type with 18.0 mm thread diameter for easy installation
• Overall length of 26.69 inches to accommodate factory specifications

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-24837) is engineered to meet the exact specifications of your vehicle’s original equipment. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings, which are critical for maintaining efficient combustion and reducing emissions. The sensor includes a 4-wire configuration with 20-gauge wiring, ensuring consistent electrical signals and durability under harsh engine conditions. The 23.15-inch wiring harness length and radiused polygon female connector are designed for a precise fit, minimizing installation issues and ensuring a secure connection. The threaded mounting type with an 18.0 mm diameter matches factory mounting points, facilitating straightforward replacement.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering emission control components that meet or exceed original equipment standards. This oxygen sensor is part of that line, providing a direct replacement solution that maintains the integrity of your vehicle’s emissions system. Walker Products OE parts are designed to integrate seamlessly with your Lexus or Toyota’s existing systems, supporting compliance with emissions regulations and engine performance requirements.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Helps resolve check engine light triggers related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter function
• Prevents rough idling and engine hesitation caused by faulty sensors
• Supports smooth engine performance and drivability

Installation Notes and Tips

When installing the Walker 250-24837 oxygen sensor, ensure the engine is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the connector’s radiused polygon female shape matches the vehicle harness for a secure fit. Avoid twisting or stretching the 23.15-inch wiring harness during installation. It is recommended to check for any exhaust leaks around the mounting area after installation to maintain sensor accuracy.

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 its fitment and function. Please refer to Walker’s official warranty policy for specific coverage details related to this oxygen sensor.