Walker 250-25018 Oxygen Sensor

Overview of Walker Products OE Oxygen Sensor 250-25018

The Walker Products OE Oxygen Sensor 250-25018 is designed specifically for select BMW and Mercedes-Benz models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure and accurate installation.

• Heated oxygen sensor for improved response time
• Specific fit for BMW 1 Series M, 3 Series, 5 Series, and Mercedes-Benz C-Class, SLK, X3, X5, and Z4 models
• Threaded mounting with 18.0 mm thread diameter
• 5-wire configuration with 20 gauge wire for reliable signal transmission
• 57.6 inches wiring harness length and 61.14 inches overall length for flexible installation
• Radiused polygon male connector for secure electrical connection

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-25018) is engineered to meet the exact specifications of various BMW and Mercedes-Benz vehicles, including the BMW 135i, 328i xDrive, 530xi, and Mercedes-Benz C63 AMG and SLK250. The heated sensor type allows for faster warm-up times, which helps the engine control unit (ECU) maintain optimal air-fuel ratios more efficiently. The sensor’s 5-wire design and 20 gauge wire ensure accurate and stable signal transmission, while the radiused polygon male connector provides a secure and precise fit to the vehicle’s wiring harness.

The threaded mounting type with an 18.0 mm thread diameter allows for straightforward installation in the exhaust system. With a wiring harness length of 57.6 inches and an overall length of 61.14 inches, this sensor offers sufficient reach for proper placement without excess slack.

Walker Products OE Brand Line

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM standards. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with factory-installed components. Choosing Walker Products OE means selecting a sensor designed to integrate seamlessly with your vehicle’s emission control system.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper fuel mixture control
• Resolves engine performance issues related to faulty oxygen sensors
• Helps reduce emissions and pass state inspection tests
• Eliminates rough idling and poor fuel economy caused by sensor failure
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use appropriate tools to remove the old sensor and install the new one with the correct torque to prevent damage to the threaded mounting. Verify the connector shape and gender match the vehicle’s wiring harness for a secure connection. It is recommended to inspect the wiring harness for any damage before installation.

Quality Assurance

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details are not provided here, Walker typically offers coverage consistent with OEM replacement parts. Always consult product documentation or the manufacturer for warranty information.