Bosch 16980 Oxygen Sensor - Downstream

Bosch 16980 Oxygen Sensor Overview

Bosch 16980 is a specific-fit, heated narrow-band oxygen sensor for downstream use on select Audi TT Quattro applications. It provides air-fuel-ratio feedback to the ECU so the engine can maintain stable closed-loop control and emissions performance.

Built as an Actual OE Oxygen Sensor, this Bosch unit reflects the brand’s long OE development history and uses a threaded metal housing, 4-wire blade-terminal design, and included wiring harness for direct replacement service.

Key Features

• Specific-fit Bosch oxygen sensor for downstream placement
• Heated narrow-band sensor type for faster closed-loop operation
• 4-wire design with oblong male connector and blade terminals
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included for the listed application
• Metal housing built for high-temperature and vibration exposure
• Cross-reference: 1K0998262A

Product Details

Bosch 16980 is part of the Bosch Actual OE Oxygen Sensor line, which focuses on OE-style replacement sensors built around Bosch’s narrow-band switching technology. The sensor measures exhaust oxygen content and sends precise feedback to the ECU, helping the engine adjust fuel delivery during normal driving and under changing load conditions. For drivers searching for a downstream oxygen sensor for 2000-2006 Audi TT Quattro or a 2001 Audi TT Quattro downstream oxygen sensor from chassis #8N1034001, this part number provides the correct fitment and connector style.

Compatible With 2000-2006 Audi TT Quattro, downstream. Compatible With 2001 Audi TT Quattro, downstream, from chassis #8N1034001. Bosch 16980 is a direct replacement choice for maintaining emissions monitoring and fuel-control accuracy on these Audi TT Quattro applications.

Common Issues This Part Can Address

• Fault codes related to downstream oxygen sensor performance
• Unstable closed-loop fuel control from a worn sensor element
• Emissions test failures tied to inaccurate exhaust oxygen readings
• Delayed sensor response after heat cycling or age-related wear
• Connector or harness mismatch when replacing the original sensor

Installation Notes

This sensor uses a threaded mount with an 18 mm thread size and a 22 mm hex. Verify the downstream location, connector shape, and harness routing before installation. Because oxygen sensors are exposed to heat and corrosion, inspect the exhaust bung and wiring path during replacement to avoid damage to the new sensor.

Quality Assurance

Bosch has supplied OE oxygen sensor technology for decades, and the Actual OE Oxygen Sensor line is built to the same application-specific standards used by vehicle manufacturers. Bosch 16980 is engineered for consistent signal output, reliable heater operation, and durable service in demanding exhaust conditions.