Walker 250-24187 Oxygen Sensor - Downstream Left

Overview of Walker Products OE Oxygen Sensor 250-24187

The Walker Products OE Oxygen Sensor 250-24187 is designed specifically for Lexus IS250 and IS350 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-wire design for reliable operation
• Specific fit for Lexus IS250 and IS350 models
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure electrical connection
• Wiring harness length of 40.87 inches and overall length of 44.41 inches
• 20 gauge wire for durability and signal integrity

Detailed Product Features and Specifications

This oxygen sensor features a heated sensor type that allows it to reach operating temperature quickly, improving emissions control efficiency. The 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The sensor is designed with a threaded mounting type and an 18.0 mm thread diameter, making installation straightforward and secure. The connector is a radiused polygon male type, engineered to fit precisely with the vehicle’s wiring harness. With a wiring harness length of 40.87 inches and an overall length of 44.41 inches, this sensor provides ample reach for proper installation in the engine bay. The 20 gauge wire measurement balances flexibility and durability for long-term use.

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 from the Walker Products OE line is engineered to provide reliable emissions control and maintain factory-level performance for Lexus IS250 and IS350 vehicles. The product line emphasizes precise fitment and durability, ensuring compatibility and longevity in demanding automotive environments.

Applications and Common Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Helps resolve check engine light triggers related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors
• Prevents failed emissions tests due to sensor malfunction

Installation Notes and Tips

When installing the Walker Products OE oxygen sensor 250-24187, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Confirm the connector type matches the vehicle harness before installation. Tighten the sensor to the manufacturer’s torque specifications to prevent leaks or damage. Verify wiring harness routing to prevent contact with hot or moving engine parts.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. This part number 250-24187 undergoes rigorous testing to ensure reliable operation in Lexus IS250 and IS350 models. While specific warranty details are not provided here, Walker typically offers coverage consistent with OEM replacement parts, supporting confidence in product longevity and function.