Walker 250-24188 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Overview of Walker 250-24188 Oxygen Sensor

The Walker 250-24188 oxygen sensor is designed specifically for select Lexus, Pontiac, and Toyota models, including the Corolla, Matrix, SC430, and Vibe. This heated oxygen sensor ensures accurate emissions control and optimal engine performance through precise air-fuel mixture monitoring.

• Heated sensor type for faster response times
• Specific fit for Lexus, Pontiac, and Toyota vehicles
• 29.06-inch wiring harness length for flexible installation
• 20 gauge wire with 4-wire configuration
• Radiused polygon male connector for secure connection
• 18.0 mm threaded mounting for reliable fit
• Overall length of 32.6 inches for proper placement

Detailed Product Features and Specifications

This Walker oxygen sensor (part number 250-24188) features a heated sensor element that allows it to reach operating temperature quickly, improving emissions control efficiency. The 4-wire design includes two wires for the heater circuit and two for the sensor signal, ensuring accurate oxygen level readings. The wiring harness length of 29.06 inches provides sufficient reach for installation in the engine bay, while the 20 gauge wire ensures durability and resistance to heat and vibration. The sensor’s radiused polygon male connector is designed for a secure and precise fit, minimizing the risk of disconnection or signal loss. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in compatible exhaust systems. Overall, the sensor measures 32.6 inches in length, accommodating proper placement within the vehicle’s emission system.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM specifications. This oxygen sensor is part of the Walker Products OE series, ensuring compatibility and performance consistent with factory-installed components. The OE line is engineered to provide reliable emissions control and maintain vehicle compliance with environmental standards.

Compatible Vehicles and Common Applications

• Compatible with Lexus SC430 models requiring a specific heated oxygen sensor
• Fits Pontiac Vibe models with threaded oxygen sensor mounts
• Designed for Toyota Corolla and Matrix vehicles needing a 4-wire heated sensor

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor failure or slow response
• Engine performance problems related to improper sensor data
• Failed emissions tests resulting from sensor malfunction

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use appropriate tools to remove the old sensor and install the Walker 250-24188 sensor by threading it securely into the exhaust port. Connect the radiused polygon male connector firmly to the vehicle’s wiring harness. Verify the wiring harness length and connector orientation to prevent strain or damage. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper sensor operation.

Quality Assurance and Warranty

Walker oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. The 250-24188 sensor undergoes rigorous testing to comply with emissions regulations. While specific warranty details may vary, Walker Products OE parts typically include a limited warranty against defects in materials and workmanship.