The Bosch 17225 upstream oxygen sensor is designed for Audi RS5 (4.2L V8, 2013–2015) and A8 Quattro (4.2L V8, 2011–2012). It measures exhaust oxygen content before the catalytic converter to enable precise fuel control, reducing emissions and optimizing engine performance. This OE-quality sensor restores factory-level efficiency.
Key Features & Benefits
- Upstream Position: Mounted before the catalytic converter for accurate engine-out air-fuel ratio measurement.
- Heated 4-Wire Design: Fast warm-up ensures consistent readings even during cold starts.
- OEM Cross-Reference: Direct replacement for Audi RS5 and A8 Quattro 4.2L V8 models.
- Emissions Compliance: Helps maintain proper fuel mixture for cleaner exhaust and passing emissions tests.
- Bosch Reliability: Backed by decades of oxygen sensor manufacturing expertise.
Vehicle Fitment
| Make | Model | Years | Engine |
|---|---|---|---|
| Audi | RS5 | 2013–2015 | 4.2V8 |
| Audi | A8 Quattro | 2011–2012 | 4.2V8 |
Technical Specifications
| Part Number | 17225 |
| Brand | Bosch |
| Type | Oxygen Sensor |
| Position | Upstream |
Installation Notes
Professional installation recommended to ensure proper sensor threading and wiring routing.
About Bosch
Bosch is the original inventor of the automotive oxygen sensor and continues to be a leading supplier of high-quality emission control components.
This part also goes by the following cross reference.
Cross Reference Part Number:
Fits These Vehicles
| Make | Model | Engine | Years |
|---|---|---|---|
| Audi | RS5 | 4.2V8 | 2013–2015 |
| Audi | A8 Quattro | 4.2V8 | 2011–2012 |