Walker 350-34257 Oxygen Sensor - Upstream

Overview of Walker Oxygen Sensor for Mercedes-Benz SL320

The Walker 350-34257 oxygen sensor is designed specifically for the Mercedes-Benz SL320, 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 installation.

• Heated oxygen sensor with 4 wires for accurate readings
• Specific fit for Mercedes-Benz SL320 models
• Threaded mounting with 18.0 mm thread diameter
• 8.39-inch wiring harness length and 11.93-inch overall length
• 20 gauge wire measurement for durability and signal integrity
• Radiused polygon male connector for reliable connection

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34257) is engineered to meet the exact specifications of the Mercedes-Benz SL320. The sensor type is heated, which allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor includes four wires with a 20 gauge measurement, providing stable and accurate signal transmission. Its wiring harness length of 8.39 inches and overall length of 11.93 inches are designed to fit precisely without excess slack or tension.

The threaded mounting type with an 18.0 mm diameter ensures a secure and leak-free installation. The connector features a radiused polygon shape with a male gender, matching the factory wiring harness for a direct fit. This specific fitment helps maintain the integrity of the vehicle’s emission control system.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a balance of quality and compatibility for Mercedes-Benz vehicles. The product line emphasizes precise fitment and durability, supporting proper engine management and emissions compliance.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors on Mercedes-Benz SL320
• Helps resolve engine performance issues related to incorrect air-fuel mixture
• Reduces emissions by providing accurate oxygen level data to the engine control unit
• Prevents check engine light triggers caused by sensor malfunctions
• Improves fuel economy by enabling proper combustion adjustments

Installation Notes and Tips

When installing the Walker 350-34257 oxygen sensor, ensure the engine is cool to avoid burns. Use the correct tools to avoid damaging the threaded mounting. Verify the connector matches the factory harness before installation. It is recommended to apply anti-seize compound on the threads to facilitate future removal. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper sensor operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34257 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship. This ensures reliable performance and peace of mind when replacing emission control sensors on your Mercedes-Benz SL320.