Walker 250-241178 Oxygen Sensor - Downstream Rear

Overview of Walker 250-241178 Oxygen Sensor for Lexus and Toyota

The Walker 250-241178 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Highlander, RX350, RX350L, RX450h, and RX450hL. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated oxygen sensor with 4-wire configuration for precise readings
• Specific fit for Lexus and Toyota models listed
• 23.15 inches wiring harness length for convenient installation
• 20 gauge wire for durability and signal integrity
• 18mm thread diameter compatible with OEM specifications
• Female connector for direct plug-and-play replacement
• Overall length of 26.69 inches to fit factory mounting locations

Detailed Product Description and Attributes

This Walker Products OE oxygen sensor (part number 250-241178) features a heated sensor type 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 the heating element, ensuring reliable operation under various driving conditions. The wiring harness length of 23.15 inches provides sufficient reach for installation in the exhaust system of compatible Lexus and Toyota vehicles. With a wire gauge measurement of 20, the sensor wiring maintains signal quality and durability. The 18mm thread diameter matches OEM specifications, allowing for a secure and proper fit. The female connector design facilitates straightforward replacement without the need for splicing or modifications.

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, ensuring compatibility and performance consistent with factory-installed parts. Walker Products OE parts are engineered to provide reliable operation and maintain vehicle emissions compliance, making them suitable for professional repairs and maintenance.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing correct exhaust gas readings
• Helps reduce harmful emissions by ensuring proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Walker 250-241178 oxygen sensor, 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 vehicle harness to avoid compatibility issues. Avoid damaging the wiring harness during installation and confirm the sensor is threaded in securely without cross-threading. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and are tested for durability and performance. This part number 250-241178 comes with a limited warranty that covers defects in materials and workmanship, providing confidence in its reliability for Lexus and Toyota emission control systems.