Walker 350-34553 Oxygen Sensor - Downstream, Upstream, Upstream Left or Upstream Right

Overview of Walker 350-34553 Oxygen Sensor

The Walker 350-34553 oxygen sensor is designed specifically for select Mercedes-Benz models, including the 300E, 500SL, and S600. 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 sensor type for faster warm-up and accurate readings
• Specific fit for various Mercedes-Benz models such as 300E, 400SE, and C36 AMG
• Threaded mounting type with an 18.0 mm thread diameter
• Four-wire design with a radiused polygon female connector
• Wiring harness length of 11.34 inches and overall length of 14.88 inches
• Wire gauge measurement of 20 for reliable electrical performance

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34553) is engineered to meet the specific requirements of Mercedes-Benz vehicles, including models like the E420, 500SEC, and SL320. The heated sensor design allows for quicker activation, improving emissions control during cold starts. Featuring a four-wire configuration, this sensor provides accurate voltage signals to the engine control unit, helping maintain efficient combustion and reduce harmful emissions.

The sensor’s threaded mounting type with an 18.0 mm diameter ensures secure installation in the exhaust system. Its radiused polygon female connector is designed for a precise fit, minimizing connection issues. The wiring harness length of 11.34 inches and overall length of 14.88 inches accommodate the specific routing requirements of the compatible Mercedes-Benz models.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering reliable emission control components tailored to exact vehicle specifications. This oxygen sensor is part of that line, providing a direct replacement solution that aligns with original equipment standards for Mercedes-Benz vehicles. The product line emphasizes quality and fitment accuracy to support proper engine management and emissions compliance.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for improved fuel efficiency
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce vehicle emissions to meet regulatory standards
• Prevents rough idling and engine performance issues caused by faulty sensors
• Supports proper catalytic converter function by providing correct air-fuel data

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket for threaded removal and installation
• Verify connector type matches the vehicle’s wiring harness (radiused polygon female)
• Do not over-tighten; torque to manufacturer specifications for the 18.0 mm thread
• Inspect wiring for damage before installation to ensure proper sensor function

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet or exceed OEM specifications for fit, form, and function. While specific warranty details for part number 350-34553 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to ensure long-term reliability in Mercedes-Benz vehicles.