Walker 250-24997 Oxygen Sensor - Downstream

Overview of Walker 250-24997 Oxygen Sensor for BMW Models

The Walker 250-24997 oxygen sensor is designed specifically for select BMW vehicles, including the 325i, 528i, 530i, and X3. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for BMW 325i, 528i, 530i, and X3 models
• 12.32-inch wiring harness length for flexible installation
• 22 gauge wire measurement for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 15.87 inches for proper fitment

Detailed Features and Specifications

This oxygen sensor from Walker Products OE is engineered with a heated sensor element to provide faster response times and improved fuel efficiency. The 4-wire design includes two wires for the heater circuit and two for the sensor signal, ensuring consistent operation under various engine conditions. The wiring harness length of 12.32 inches allows for convenient routing in the engine bay, while the 22 gauge wire ensures durability and signal integrity. The radiused polygon male connector is designed for a secure and precise fit, reducing the risk of connection issues. The sensor mounts via a threaded connection with an 18.0 mm diameter, matching OEM specifications for the BMW 325i, 528i, 530i, and X3 models.

Walker Products OE Brand Line Information

Walker Products OE focuses on delivering emission control components that meet or exceed original equipment standards. This oxygen sensor is part of the Walker Products OE line, which emphasizes precise fitment and reliable performance for specific vehicle applications. Using parts from this line helps maintain factory-level emissions control and engine management accuracy.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve rough idling and engine hesitation caused by faulty sensors
• Reduces increased emissions and potential failed emissions tests
• Improves fuel economy by providing correct feedback to the engine control unit
• Eliminates check engine light codes related to oxygen sensor malfunction

Installation Notes and Tips

Installation requires removing the old oxygen sensor and threading the Walker 250-24997 sensor into the exhaust manifold or pipe. Ensure the connector matches the vehicle’s wiring harness with its radiused polygon male design. Avoid over-tightening the sensor; use a torque wrench to achieve the recommended torque for an 18.0 mm threaded sensor. Verify wiring connections are secure and free from damage before completing installation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain compliance with emissions regulations and supports long-term vehicle reliability.