Walker 350-34239 Oxygen Sensor - Upstream Right

Overview of Walker Oxygen Sensor 350-34239

The Walker 350-34239 oxygen sensor is designed specifically for select Mercedes-Benz models, including the C43 AMG, C280, CLK320, and CLK430. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Mercedes-Benz C43 AMG, C280, CLK320, and CLK430
• Threaded mounting type with 18.0 mm thread diameter
• Connector features a radiused polygon male design
• Wiring harness length of 25.12 inches and overall length of 28.66 inches
• Wire gauge measurement of 20 for reliable electrical performance

Detailed Product Description

The Walker 350-34239 oxygen sensor is a heated sensor designed to provide accurate and timely feedback to the engine control unit (ECU) for efficient combustion and emissions management. Featuring a 4-wire setup, this sensor includes a heating element that allows it to reach operating temperature quickly, improving sensor response time and reducing emissions during cold starts. The sensor’s threaded mounting type with an 18.0 mm diameter ensures a secure and precise fit in the exhaust system. The connector is a radiused polygon male type, engineered for a reliable electrical connection and ease of installation. With a wiring harness length of 25.12 inches and an overall length of 28.66 inches, this sensor is tailored to fit the specific routing and space requirements of the compatible Mercedes-Benz models.

Walker Products Aftermarket Line

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components that meet or exceed OEM specifications. Walker Products Aftermarket parts are engineered to deliver consistent performance and durability, making them suitable for professional repairs and maintenance on vehicles like the Mercedes-Benz C43 AMG, C280, CLK320, and CLK430.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Helps reduce harmful emissions by ensuring proper catalytic converter function
• Eliminates engine performance issues such as rough idling or hesitation
• Prevents check engine light triggers related to oxygen sensor faults
• Supports compliance with emissions testing requirements

Installation Notes and Tips

• Ensure the vehicle is cooled down before sensor removal to avoid burns
• Use appropriate oxygen sensor socket tools to prevent damage during installation
• Verify connector type and wiring harness length match vehicle specifications
• Apply anti-seize compound on threads if recommended by manufacturer
• Clear any diagnostic trouble codes after installation to reset the ECU

Quality Assurance and Warranty

The Walker 350-34239 oxygen sensor is manufactured to meet strict quality standards for fit, form, and function. As part of the Walker Products Aftermarket line, it undergoes rigorous testing to ensure reliable operation in emission control systems. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.