Bosch 17351 Oxygen Sensor - Upstream or Upstream Left

Reliable Oxygen Sensor for Audi, Volkswagen, and Bentley Vehicles

The Bosch Actual OE Oxygen Sensor 17351 is designed to provide accurate air-fuel mixture readings for select Audi, Volkswagen, and Bentley models. This heated, wide-band oxygen sensor ensures optimal engine performance and emission control by delivering precise data to the vehicle’s engine management system.

• Heated wide-band oxygen sensor for improved response time
• Specific fit for Audi A4, A4 Quattro, A8 Quattro, Volkswagen Golf, Jetta, Passat, and more
• 56.7-inch wiring harness with oblong male connector included
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Durable metal housing finished in steel for long-lasting use
• Standard replacement grade with 5 wires and 6 terminals

About the Bosch Actual OE Oxygen Sensor Line

The Bosch Actual OE Oxygen Sensor product line focuses on delivering direct-fit replacement sensors that meet original equipment specifications. This ensures compatibility and reliable performance for emission control systems in vehicles such as Audi, Volkswagen, and Bentley. The 17351 sensor maintains factory-level accuracy and durability, supporting proper engine operation and emissions compliance.

Detailed Product Description

This Bosch oxygen sensor features a heated wide-band design, which allows for faster sensor warm-up and more precise air-fuel ratio measurements. The sensor includes a 56.7-inch wiring harness with a male oblong connector, facilitating straightforward installation without the need for modifications. Its threaded mounting type with an 18 mm diameter and 22 mm hex size matches factory specifications for a secure fit. Constructed with a metal housing finished in steel, the sensor is built to withstand harsh engine environments. The 5-wire, 6-terminal configuration supports accurate signal transmission to the engine control unit.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for Audi A4, A8 Quattro, Volkswagen Golf, Jetta, Passat, and Bentley Continental models
• Helps resolve engine performance issues related to incorrect air-fuel mixture readings
• Reduces emissions by ensuring proper catalytic converter function
• Eliminates check engine light triggers caused by faulty oxygen sensors
• Improves fuel efficiency by providing precise sensor data to the engine management system

Installation Notes and Tips

• Ensure the vehicle is compatible with Bosch part number 17351 before installation
• Use a 22 mm oxygen sensor socket for removal and installation
• Do not overtighten the sensor; torque to manufacturer specifications
• Verify wiring harness length and connector type match the vehicle’s original sensor
• Inspect the mounting threads and clean the area before installing the new sensor

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards and provide reliable performance in emission control systems. The Actual OE Oxygen Sensor 17351 is a standard replacement grade part designed to match original equipment specifications. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship to ensure customer confidence in the product.