Walker 250-24381 Oxygen Sensor - Upstream Left or Upstream Right

Overview of Walker 250-24381 Oxygen Sensor for BMW 530i and 540i

The Walker Products OE 250-24381 oxygen sensor is designed specifically for BMW 530i and 540i 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 sensor type for faster response times
• Specific fit for BMW 530i and 540i models
• 20.2-inch wiring harness length with 4 wires
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 23.74 inches for proper installation
• 20 gauge wire for reliable signal transmission

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM specifications. The 250-24381 oxygen sensor is part of this line, ensuring compatibility and performance tailored to the exact requirements of BMW 530i and 540i vehicles. This product line emphasizes durability and precise fitment to maintain factory-level emissions control.

Product Features and Technical Specifications

This oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire design supports both the sensor signal and heater circuit, while the 20 gauge wire ensures consistent electrical performance. The radiused polygon male connector provides a secure and reliable connection to the vehicle’s wiring harness. With a threaded mounting type and an 18.0 mm thread diameter, installation aligns with factory standards. The overall length of 23.74 inches and wiring harness length of 20.2 inches accommodate proper routing and fitment within the engine bay.

Common Applications and Issues Addressed

• Helps resolve poor fuel economy caused by inaccurate oxygen readings
• Reduces engine hesitation and rough idling related to faulty sensors
• Supports emission system compliance by maintaining correct air-fuel ratios
• Prevents check engine light triggers due to sensor malfunctions
• Improves overall engine performance and drivability in BMW 530i and 540i

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old oxygen sensor carefully using the appropriate oxygen sensor socket. Verify the connector type matches the radiused polygon male connector on the Walker 250-24381 sensor. Thread the new sensor into place by hand to avoid cross-threading, then tighten to manufacturer torque specifications. Reconnect the wiring harness and clear any diagnostic trouble codes after installation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The 250-24381 part undergoes rigorous testing to ensure durability and reliable performance in BMW 530i and 540i vehicles. Warranty coverage details should be confirmed with the product documentation or supplier.