Walker 250-24125 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Overview of Walker 250-24125 Oxygen Sensor for BMW Models

The Walker 250-24125 oxygen sensor is designed specifically for select BMW vehicles, including the 540i, 740i, 740iL, 750iL, 840Ci, 850Ci, M5, Z3, and Z8 models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for BMW 540i, 740i, 740iL, 750iL, 840Ci, 850Ci, M5, Z3, and Z8
• 19.41-inch wiring harness length with 4 wires of 20 gauge
• Radiused polygon female connector for secure connection
• Threaded mounting with 18.0 mm thread diameter
• Overall length of 22.95 inches for proper installation

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 designed to meet or exceed factory specifications. The Walker Products OE line ensures compatibility and reliable performance for emission control components, making it a suitable choice for maintaining BMW vehicles’ emission systems.

Product Features and Specifications

The Walker 250-24125 oxygen sensor features a heated sensor element that allows for quicker warm-up and more accurate readings under various operating conditions. The 4-wire design includes a 20-gauge wire gauge measurement, providing durability and reliable signal transmission. The wiring harness length of 19.41 inches offers sufficient reach for proper routing in the engine bay. The radiused polygon female connector ensures a secure and precise fit, reducing the risk of connection issues. The sensor mounts via a threaded design with an 18.0 mm thread diameter, compatible with the specified BMW models.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces harmful emissions by providing accurate oxygen level data
• Prevents engine performance issues related to faulty sensors
• Addresses check engine light triggers related to oxygen sensor faults
• Supports smooth engine idling and acceleration in BMW 540i, 740i, and M5 models

Installation Notes and Tips

When installing the Walker 250-24125 oxygen sensor, ensure the engine is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. Properly route the wiring harness to prevent contact with hot or moving parts. Torque the sensor to manufacturer specifications to ensure a secure fit and prevent exhaust leaks.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details for part number 250-24125 may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to product documentation or manufacturer resources for exact warranty terms.