Walker 250-23066 Oxygen Sensor - Upstream

Overview of Walker 250-23066 Oxygen Sensor for Mercedes-Benz 190E

The Walker Products OE 250-23066 oxygen sensor is designed specifically for the Mercedes-Benz 190E. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor with 3-wire configuration
• Specific fit for Mercedes-Benz 190E models
• Threaded mounting with 18.00 mm thread diameter
• Radiused polygon female connector for secure connection
• Wiring harness length of 18.23 inches and overall length of 21.77 inches
• 20 gauge wire for durability and signal integrity

Detailed Product Features and Specifications

This Walker oxygen sensor (part number 250-23066) is engineered with a heated sensor type to provide faster response times and improved fuel efficiency. The sensor includes three wires with 20 gauge measurement, which supports accurate signal transmission to the vehicle’s engine control unit. The wiring harness length of 18.23 inches and overall length of 21.77 inches allow for proper routing and installation within the engine bay. The threaded mounting type with an 18.00 mm diameter ensures a secure and leak-free fit. The connector features a radiused polygon shape with a female gender, designed to match the factory wiring harness of the Mercedes-Benz 190E.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is part of that line, providing a direct replacement solution for emission control sensors. The OE designation indicates compatibility and performance aligned with the original sensor installed on the Mercedes-Benz 190E, supporting proper engine management and emissions compliance.

Common Applications and Problem Resolution

• Restores accurate oxygen level readings for optimal air-fuel mixture
• Helps resolve rough idling and engine hesitation issues
• Reduces increased emissions caused by faulty sensors
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring proper sensor feedback

Installation Notes and Tips

When installing the Walker 250-23066 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use appropriate tools to avoid damaging the sensor or connector. Verify the radiused polygon female connector matches the vehicle’s wiring harness for a secure connection. It is recommended to replace the sensor when the engine is cool to prevent injury and ensure proper torque application.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain emission system integrity and supports compliance with environmental regulations.