Walker 250-241295 Oxygen Sensor - Downstream Left

Overview of Walker OE Base Sensor 250-241295

The Walker OE Base Sensor 250-241295 is a heated narrow-band oxygen sensor designed specifically for select Lexus and Toyota models. Engineered to meet OEM specifications, this oxygen sensor ensures accurate air-fuel mixture readings for optimal engine performance and emissions control.

• Heated narrow-band oxygen sensor for precise emissions monitoring
• Specific fit for Lexus 4Runner, GX460, and LX570 models
• Four-wire design with spade terminal type and square female connector
• Thread size M18 - 1.5 with 22mm wrench size for installation
• OE Base Sensor product line ensuring reliable OEM-level quality

Detailed Product Features and Specifications

This Walker oxygen sensor features a heated element to quickly reach operating temperature, improving sensor response time and reducing emissions during cold starts. The narrow-band sensor type provides accurate feedback to the engine control unit (ECU) for maintaining the correct air-fuel ratio. It includes four wires with male terminals and a female square-shaped connector, designed for a specific fit rather than universal application. The sensor’s thread size is M18 - 1.5, compatible with the factory mounting location, and requires a 22mm wrench for proper installation.

The OE Base Sensor line by Walker focuses on delivering sensors that meet original equipment standards, ensuring compatibility and performance consistent with factory parts. This product line is tailored for direct replacement applications, minimizing installation issues and maintaining vehicle emissions compliance.

Compatible Vehicles and Common Applications

• Designed for Lexus 4Runner models requiring precise oxygen sensor replacement
• Compatible with Toyota GX460 for maintaining emission control system integrity
• Fits Toyota LX570 models needing a heated narrow-band oxygen sensor
• Addresses issues such as rough idling, poor fuel economy, and failed emissions tests
• Helps resolve check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker OE Base Sensor 250-241295, ensure the vehicle is cool to avoid burns. Use a 22mm wrench to remove the old sensor and install the new one with the M18 - 1.5 thread size. Confirm the four-wire connector matches the factory harness with the square female connector and spade terminals. Proper torque and connector engagement are essential for sensor performance and longevity.

Quality Assurance and Warranty Information

Walker OE Base Sensors are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. While specific warranty details are not provided here, Walker products typically come with a limited warranty covering defects in materials and workmanship. Using this sensor helps maintain your Lexus or Toyota’s emission system compliance and engine efficiency.