Bosch 16166 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Audi and Volkswagen Vehicles

The Bosch Actual OE Oxygen Sensor 16166 is designed to provide precise air-fuel mixture readings for select Audi and Volkswagen models. This narrow-band heated oxygen sensor ensures accurate emissions control and engine performance by delivering reliable data to the vehicle’s engine management system.

• Specific fit for Audi A3, Volkswagen Golf, GTI, Atlas, and other models
• Heated narrow-band oxygen sensor for faster response times
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• 27.8-inch wiring harness length with 4-wire blade terminals and oblong male connector
• Durable metal housing finished in steel for long-lasting performance
• Standard replacement grade for direct OE compatibility

About the Bosch Actual OE Oxygen Sensor Line

The Bosch Actual OE Oxygen Sensor product line focuses on delivering sensors that meet original equipment specifications. This ensures that the 16166 oxygen sensor maintains the same fit, form, and function as the factory-installed part. Designed for specific vehicle applications, this line supports accurate emissions control and engine efficiency, making it a suitable replacement for worn or faulty sensors in Audi and Volkswagen vehicles.

Product Details and Specifications

This oxygen sensor features a narrow-band sensor type with heating elements to provide quicker sensor activation and improved accuracy under various operating conditions. The sensor includes a 27.8-inch wiring harness with four wires and blade terminals, connected via an oblong male connector. The threaded mounting type with an 18 mm diameter and 22 mm hex size allows for straightforward installation. The sensor’s metal housing and steel finish contribute to its durability and resistance to harsh engine environments. Overall length measures 31.1 inches, with a sealing surface to connector length of 29.9 inches, ensuring proper fitment in compatible vehicles.

Compatible Vehicles and Common Applications

• Replacement for oxygen sensors in Audi A3, S3, TT Quattro, and TTS Quattro
• Suitable for Volkswagen Golf, Golf R, Golf Alltrack, Golf SportWagen, GTI, Atlas, and Atlas Cross Sport
• Helps address issues such as poor fuel economy, rough idling, and failed emissions tests
• Restores proper engine management system function by providing accurate oxygen level readings

Installation Notes and Tips

Ensure the vehicle is cool before attempting sensor replacement to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the connector type and wiring harness length match the vehicle’s specifications. Avoid damaging the sensor’s wiring during installation. No mounting bracket is included, so use the existing mounting location on the vehicle.

Quality Assurance and Warranty

The Bosch Actual OE Oxygen Sensor 16166 is manufactured to meet original equipment standards, ensuring reliable performance and durability. Bosch sensors undergo rigorous testing to comply with emissions regulations and vehicle requirements. While specific warranty details are not provided here, Bosch typically offers coverage consistent with industry standards for emission control components.