Walker 250-23163 Oxygen Sensor - Upstream

Overview of Walker 250-23163 Oxygen Sensor for Mercedes-Benz

The Walker 250-23163 oxygen sensor is designed specifically for select Mercedes-Benz models including the 380SEC, 420SEL, 560SEC, and 560SEL. This heated oxygen sensor provides accurate emissions control data to help maintain engine efficiency and reduce harmful exhaust emissions.

• Heated sensor type for faster response times
• Specific fit for Mercedes-Benz 380SEC, 420SEL, 560SEC, and 560SEL
• 35.94-inch wiring harness length for optimal installation
• 20 gauge wire with 3-wire configuration
• Radiused polygon female connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 39.49 inches for proper fitment

Detailed Product Description and Attributes

This Walker oxygen sensor (part number 250-23163) features a heated sensor element that allows it to reach operating temperature quickly, improving fuel mixture readings and emissions control. The sensor includes a 35.94-inch wiring harness with 20 gauge wires arranged in a 3-wire configuration, ensuring reliable electrical connectivity. The radiused polygon female connector is designed to match the original equipment specifications, providing a secure and precise fit. The sensor mounts via a threaded connection with an 18.0 mm diameter, matching the factory mounting points on compatible Mercedes-Benz vehicles. With an overall length of 39.49 inches, this sensor is engineered for proper placement within the exhaust system.

Walker Products OE Brand Line

The Walker Products OE line focuses on delivering direct replacement parts that meet original equipment specifications. This oxygen sensor from the Walker Products OE line is engineered to provide the same fit, form, and function as the factory-installed sensor on Mercedes-Benz 380SEC, 420SEL, 560SEC, and 560SEL models. Using parts from this line helps maintain vehicle performance and emissions compliance.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve rough idling and engine hesitation
• Reduces increased emissions and failed emissions tests
• Prevents poor fuel economy caused by faulty sensor readings
• Eliminates check engine light codes related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker 250-23163 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent seizing. Connect the radiused polygon female connector securely to the vehicle’s wiring harness. Verify the wiring harness length and connector type match the original sensor to avoid fitment issues. Proper torque specifications should be followed to avoid damage to the sensor or exhaust components.

Quality Assurance and Warranty

Walker oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. The 250-23163 sensor undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, Walker Products OE parts typically include a limited warranty against defects in materials and workmanship to provide confidence in product quality.