Walker 250-25126 Oxygen Sensor - Upstream

Overview of Walker 250-25126 Oxygen Sensor for Mercedes-Benz

The Walker 250-25126 oxygen sensor is designed specifically for select Mercedes-Benz models including the E250, GLE300d, GLK250, and ML250. 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 oxygen sensor type for faster response times
• Specific fit for Mercedes-Benz E250, GLE300d, GLK250, and ML250
• 24.60-inch wiring harness length with 5 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Threaded mounting with 18.0 mm thread diameter
• Overall length of 29.52 inches for proper installation

Walker Products OE Brand Line Details

This oxygen sensor is part of the Walker Products OE line, which focuses on providing original equipment quality parts designed to meet or exceed factory specifications. The Walker Products OE line ensures that the 250-25126 oxygen sensor delivers reliable performance and durability tailored to the exact requirements of Mercedes-Benz vehicles.

Technical Description and Attributes

The Walker 250-25126 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving emissions control efficiency. It includes a 24.60-inch wiring harness with five 20-gauge wires, ensuring proper electrical connectivity and signal transmission. The sensor’s radiused polygon male connector provides a secure and precise fit, reducing the risk of connection issues. The threaded mounting type with an 18.0 mm thread diameter allows for straightforward installation in the exhaust system. With an overall length of 29.52 inches, this sensor is designed to fit the specific layout of the compatible Mercedes-Benz models.

Applications and Common Issues Addressed

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces harmful emissions by providing accurate oxygen level data
• Prevents engine performance problems related to faulty sensors
• Resolves check engine light triggers caused by oxygen sensor faults
• Improves fuel economy by ensuring optimal sensor operation

Installation Notes and Tips

When installing the Walker 250-25126 oxygen sensor, ensure the vehicle is compatible with the part number and model fitment. Use appropriate tools to avoid damaging the threaded mounting or connector. Verify the wiring harness length and connector type match the vehicle’s harness to ensure a proper electrical connection. It is recommended to replace the sensor when the engine is cool to prevent burns and to apply anti-seize compound on the threads if specified by the vehicle manufacturer.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. The 250-25126 part undergoes rigorous testing to comply with emissions regulations and OEM specifications. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary by region.