Walker 250-25087 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-25087

The Walker Products OE Oxygen Sensor 250-25087 is designed specifically for select BMW and Mini models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector for secure installation.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for BMW and Mini models including 118i, 550i, M5, X5, Cooper, and more
• 16.26-inch wiring harness length with 5 wires of 20 gauge measurement
• Thread diameter of 18.0 mm with threaded mounting type
• Radiused polygon female connector for reliable electrical connection
• Overall length of 19.8 inches for proper fitment

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-25087) is engineered to meet the exact specifications of various BMW and Mini vehicles. The sensor’s heated design allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. With a wiring harness length of 16.26 inches and five 20-gauge wires, it provides a robust electrical connection. The radiused polygon female connector ensures a secure fit, while the 18.0 mm threaded mounting type allows for straightforward installation. The overall length of 19.8 inches is tailored to fit the designated models without modification.

Walker Products OE is a product line focused on delivering original equipment quality parts that meet or exceed OEM standards. This oxygen sensor is part of that line, providing reliable performance and durability for emission control systems in BMW and Mini vehicles.

Compatible Vehicles and Applications

• BMW 118i, 550i, 550i GT, 550i GT xDrive, 550i xDrive
• BMW 650i, 650i Gran Coupe, 650i xDrive, 650i xDrive Gran Coupe
• BMW 750i, 750i xDrive, 750Li, 750Li xDrive, 760Li
• BMW M5, M6, M6 Gran Coupe, X5, X6
• Mini Cooper, Cooper Countryman, Cooper Paceman

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 malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor failure

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use the correct tools to remove the old sensor and install the new one with the 18.0 mm threaded mounting. Verify the connector matches the radiused polygon female shape for proper connection. Avoid damaging the wiring harness during installation and confirm the sensor is securely threaded to prevent exhaust leaks.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable operation and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.