Walker 250-25089 Oxygen Sensor - Upstream or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-25089

The Walker Products OE Oxygen Sensor 250-25089 is designed specifically for a range of BMW models, including the 228i, 320i, 328i, 335i, and others. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for multiple BMW models including 3 Series, 4 Series, 5 Series, and more
• 15.87-inch wiring harness length with 5 wires of 20 gauge
• Threaded mounting with 18.0 mm thread diameter for secure installation
• Radiused polygon male connector for proper electrical connection
• Overall length of 19.41 inches for optimal placement

Detailed Product Features and Specifications

This oxygen sensor from Walker Products OE is engineered with a 5-wire heated sensor design, which helps the sensor reach operating temperature quickly for accurate oxygen level readings. The 20 gauge wire ensures durability and reliable signal transmission. The 15.87-inch wiring harness length provides sufficient reach for installation in the specified BMW models. The sensor’s threaded mounting type with an 18.0 mm diameter allows for a secure and precise fit, reducing the risk of leaks or sensor misalignment. The radiused polygon male connector is designed to match the original equipment specifications, ensuring compatibility and ease of connection.

Compatible BMW Models and Applications

This oxygen sensor 250-25089 is compatible with a wide range of BMW vehicles, including but not limited to:

• BMW 228i and 228i xDrive
• BMW 320i and 320i xDrive
• BMW 328i, 328i xDrive, and 328i GT xDrive
• BMW 335i and 335i xDrive
• BMW 428i, 428i Gran Coupe, and 428i xDrive Gran Coupe
• BMW 435i and 435i xDrive Gran Coupe
• BMW 528i, 528i xDrive, 535i, and 535i GT xDrive
• BMW 640i, 640i Gran Coupe, and 640i xDrive Gran Coupe
• BMW 740i, 740Li xDrive, ActiveHybrid 3, 5, and 7
• BMW i3, i3s, i8, M2, M3, M4, M235i, M235i xDrive
• BMW X1, X3, X4, X5, X6, and Z4

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor engine performance
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Reduced fuel efficiency from inaccurate oxygen level detection
• Failed emissions tests related to sensor degradation

Installation Notes and Tips

When installing the Walker Products OE oxygen sensor 250-25089, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the connector shape and gender match the vehicle’s wiring harness to ensure proper electrical connection. It is recommended to inspect the wiring harness for any damage before installation. Proper torque specifications should be followed to avoid sensor or exhaust manifold damage.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. This sensor undergoes rigorous testing to ensure accurate emissions control and long service life. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.