Walker 250-24914 Oxygen Sensor - Downstream, Downstream Front or Downstream Rear

Overview of Walker 250-24914 Oxygen Sensor for Toyota Sienna

The Walker 250-24914 oxygen sensor is designed specifically for Toyota Sienna models, providing precise emission control monitoring. This heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions compliance.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for Toyota Sienna vehicles
• 18.23-inch wiring harness length for proper installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure electrical connection
• Overall length of 21.77 inches for correct placement
• Wire gauge measurement of 20 for durability and signal integrity

Walker Products OE Brand Line Details

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality parts. The Walker Products OE line ensures that components like the 250-24914 oxygen sensor meet strict manufacturing standards and fitment requirements, matching the specifications of the original sensor installed on Toyota Sienna vehicles.

Product Description and Technical Specifications

The Walker 250-24914 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved sensor response. It includes a 4-wire configuration, which supports both the sensor signal and heater circuit. The wiring harness length of 18.23 inches and overall length of 21.77 inches provide the necessary reach for proper installation in the exhaust system. The sensor mounts via a threaded connection with an 18.0 mm diameter, ensuring a secure fit. The radiused polygon male connector is designed to match the factory wiring harness, reducing the risk of connection issues.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for Toyota Sienna emission systems
• Helps resolve engine performance problems related to faulty sensors
• Reduces rough idling and poor fuel economy caused by sensor failure
• Supports emission compliance by maintaining proper air-fuel ratio readings
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker 250-24914 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Confirm the connector shape and gender match the factory harness before installation. Thread the sensor carefully to avoid cross-threading and torque to manufacturer specifications. Verify all electrical connections are secure before starting the engine.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet or exceed OEM standards for fit, form, and function. While specific warranty details for part number 250-24914 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to ensure reliability and durability in Toyota Sienna applications.