Bosch 17347 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Reliable Oxygen Sensor for Mercedes-Benz Vehicles

The Bosch Actual OE Oxygen Sensor 17347 is engineered to provide precise air-fuel mixture readings for a range of Mercedes-Benz models. Designed as a heated, wide-band sensor, it ensures accurate emissions control and optimal engine performance.

• Heated oxygen sensor for faster response times
• Specific fit for Mercedes-Benz models including C43 AMG, G63 AMG, S550, and more
• Wide-band sensor type for accurate air-fuel ratio measurement
• 17.6-inch wiring harness length with 18-gauge wires and 5-wire configuration
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Durable metal housing with steel finish
• Oblong male connector with blade terminals for secure connection
• Wiring harness included for direct replacement

About the Bosch Actual OE Oxygen Sensor Line

The Bosch Actual OE Oxygen Sensor product line focuses on delivering standard replacement sensors that meet original equipment specifications. This ensures compatibility and reliable performance for emission control systems in specific vehicle applications. The 17347 part number is part of this line, providing a direct fit and function for Mercedes-Benz models requiring a heated, wide-band oxygen sensor.

Detailed Product Description

This Bosch oxygen sensor features a heated design to reduce warm-up time, allowing the engine control unit to receive accurate oxygen level data sooner. The wide-band sensor type offers precise measurement of the air-fuel mixture, which is critical for maintaining emissions compliance and fuel efficiency. With a 17.6-inch wiring harness and 18-gauge wires, the sensor connects securely via an oblong male connector with blade terminals. The sensor mounts using a threaded 18 mm diameter fitting and includes a 22 mm hex size for installation. Its metal housing with a steel finish provides durability under harsh engine conditions. The wiring harness is included, facilitating a straightforward replacement process.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Mercedes-Benz C43 AMG, S550, G63 AMG, and other compatible models
• Resolves engine performance issues related to incorrect air-fuel mixture readings
• Helps correct rough idling and poor fuel economy caused by sensor malfunction
• Supports emission system compliance by providing accurate exhaust gas data
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the sensor’s wiring harness length and connector type match the vehicle’s factory specifications. Avoid twisting or damaging the wiring during installation. No mounting bracket is included, so use the existing sensor mounting location. Proper torque on the threaded fitting is essential to prevent exhaust leaks.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet OEM standards for fit, form, and function. The Actual OE Oxygen Sensor 17347 undergoes rigorous testing to ensure durability and reliable performance in emission control systems. While specific warranty details are not provided here, Bosch typically offers limited warranties on their sensors to cover manufacturing defects.