Walker 250-24220 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker 250-24220 Oxygen Sensor for Lexus LS400 and SC400

The Walker Products OE 250-24220 oxygen sensor is designed specifically for Lexus LS400 and SC400 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 wires for reliable operation
• Specific fit for Lexus LS400 and SC400 models
• 7.01-inch wiring harness length for proper installation
• 20 gauge wire measurement for durability and signal integrity
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 10.55 inches for correct positioning

Detailed Features and Specifications

This Walker oxygen sensor (part number 250-24220) features a heated sensor type that allows for faster warm-up times and improved emissions control. The sensor includes four wires, which support both the sensor signal and the heating element, ensuring consistent performance under various operating conditions. The wiring harness length of 7.01 inches provides sufficient reach for installation in the engine bay of Lexus LS400 and SC400 vehicles. The 20 gauge wire measurement balances flexibility and durability, while the radiused polygon male connector ensures a secure and precise fit with the vehicle’s wiring harness. The sensor mounts via a threaded connection with an 18.0 mm diameter, matching OEM specifications for these Lexus models. The overall length of 10.55 inches is designed to position the sensor correctly within the exhaust system for accurate readings.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering emission control components that meet original equipment specifications. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with factory-installed parts. Using a Walker Products OE sensor helps maintain the integrity of the vehicle’s emissions system and supports compliance with environmental regulations.

Common Applications and Problem Resolution

• Restores accurate air-fuel ratio readings for Lexus LS400 and SC400
• Resolves check engine light issues related to oxygen sensor faults
• Improves fuel efficiency by providing correct sensor data
• Reduces harmful emissions by maintaining proper combustion control
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Walker 250-24220 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent seizing. Connect the radiused polygon male connector securely to the vehicle’s wiring harness, verifying that the four wires are properly aligned. Allow the sensor to reach operating temperature for accurate readings after installation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and OEM specifications. While specific warranty details for part number 250-24220 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to ensure reliable performance in Lexus LS400 and SC400 vehicles.