Bosch 16076 Oxygen Sensor - Downstream

Bosch Actual OE Oxygen Sensor 16076

Bosch 16076 is an Actual OE Oxygen Sensor built for downstream monitoring on select Audi and Volkswagen applications. It uses a narrow-band heated design to deliver precise air-fuel-ratio feedback to the ECU, helping maintain stable combustion control and emissions performance.

As part of Bosch’s Actual OE Oxygen Sensor line, this replacement follows OE-focused engineering with fast light-off response, accurate lambda measurement, and durable construction for high-heat, high-vibration environments. It is a direct-fit sensor for specific vehicles, including Audi A4, A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, A6, A6 Quattro, Q5, Q7, and Volkswagen Beetle and Jetta downstream locations.

Key Features

• Actual OE Oxygen Sensor for direct replacement applications
• Narrow-band heated oxygen sensor design
• Specific fit with threaded mounting
• 4-wire configuration with blade terminals
• Oblong male connector with included wiring harness
• 18 mm thread diameter and 22 mm hex size
• Metal housing for durability in demanding exhaust conditions
• Designed for downstream placement on select Audi and Volkswagen models

OE-Style Sensor Line

Bosch developed its oxygen sensor technology from the original thimble sensor introduced in 1976 and later advanced planar narrowband designs for quicker closed-loop operation and improved lambda accuracy. The Bosch Actual OE Oxygen Sensor line brings that OE development history to the aftermarket, using ceramic sensing elements, controlled heater operation, and heat-resistant materials to support consistent signal output over a wide operating range. Bosch 16076 follows that approach for downstream emissions monitoring on the listed Audi and Volkswagen vehicles.

This part cross-references Bosch OE-style applications such as 4G0906262A and 8W0906262G for the same application.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect downstream O2 sensor readings
• Emissions test failures tied to sensor response issues
• Rough or unstable fuel control caused by inaccurate exhaust feedback
• Delayed closed-loop operation after startup

Installation Notes and Tips

Confirm downstream placement before installation and match the connector, thread size, and harness length to the original sensor. The sensor uses a threaded mount with an 18 mm thread diameter and a 22 mm hex, so proper oxygen sensor removal tools help prevent damage during service. Verify the vehicle build date on 2018-2019 Audi Q5 and Q7 applications, since fitment notes vary by production cutoff.

• Fits 2019-2020 Audi A4, downstream
• Fits 2017 Audi A4, downstream
• Fits 2018 Audi A4, downstream
• Fits 2019-2020 Audi A4 allroad, downstream
• Fits 2017 Audi A4 allroad, downstream
• Fits 2018 Audi A4 allroad, downstream
• Fits 2019-2020 Audi A4 Quattro, downstream
• Fits 2017 Audi A4 Quattro, downstream
• Fits 2018 Audi A4 Quattro, downstream
• Fits 2019-2020 Audi A5 Quattro, downstream
• Fits 2018 Audi A5 Quattro, downstream
• Fits 2019-2020 Audi A5 Sportback, downstream
• Fits 2018 Audi A5 Sportback, downstream
• Fits 2016-2018 Audi A6, downstream
• Fits 2016-2018 Audi A6 Quattro, downstream
• Fits 2019 Audi Q5, downstream
• Fits 2018 Audi Q5, downstream
• Fits 2019 Audi Q7, downstream
• Fits 2017 Audi Q7, downstream
• Fits 2018 Audi Q7, downstream
• Fits 2013-2016 Volkswagen Beetle, downstream
• Fits 2013 Volkswagen Jetta, downstream

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience and a long history of supplying sensors to vehicle manufacturers. The Actual OE Oxygen Sensor line is built to OE-level specifications for accurate signal control, stable operation, and long-term service in demanding exhaust environments.