OE Quality
60-Day Returns

NTK 25216 Oxygen Sensor - Downstream Right
Overview of NTK Direct Fit Oxygen Sensor 25216 for Audi Q7
The NTK Direct Fit Oxygen Sensor 25216 is engineered specifically for the Audi Q7, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a 26.75-inch wiring harness for straightforward installation.
- Heated oxygen sensor for faster response times
- Specific fit for Audi Q7 models
- Threaded mounting with 18mm thread diameter
- Four-wire design for accurate signal transmission
- 26.75-inch wiring harness length for proper reach
Detailed Features and Specifications
The NTK Direct Fit Oxygen Sensor 25216 is designed to meet the exact specifications required by the Audi Q7. Its heated sensor type allows the unit to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor’s four-wire configuration supports both the heater circuit and signal output, ensuring reliable data for the engine control unit. With an 18mm threaded mounting type, installation is secure and compatible with the vehicle’s exhaust system. The 26.75-inch wiring harness length provides sufficient reach for direct connection without the need for extensions or modifications.
About the NTK Direct Fit Oxygen Sensor Product Line
The Direct Fit Oxygen Sensor line by NTK is designed to provide vehicle-specific sensors that match OEM specifications. This product line focuses on delivering sensors that require no additional modifications, ensuring a seamless replacement process. The 25216 sensor is part of this line, offering a precise fit and reliable performance tailored for the Audi Q7’s emission control system.
Common Applications and Issues Addressed
- Restores accurate oxygen level readings for engine management
- Helps resolve check engine light triggers related to oxygen sensor faults
- Improves fuel economy by providing correct air-fuel mixture data
- Reduces harmful emissions by maintaining proper combustion
- Prevents rough idling and engine hesitation caused by faulty sensors
Installation Notes and Tips
When installing the NTK 25216 oxygen sensor on an Audi Q7, ensure the engine and exhaust system are cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. The 26.75-inch harness length allows for direct connection without splicing. Verify the sensor’s threaded diameter matches the exhaust port to ensure a secure fit. After installation, clear any diagnostic trouble codes to reset the engine control unit.
Quality Assurance and Warranty
NTK oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. The Direct Fit Oxygen Sensor 25216 undergoes rigorous testing to comply with emission control requirements. While specific warranty details are not provided here, NTK products typically come with manufacturer-backed warranties to protect against defects in materials and workmanship.
| Brand | NTK |
| Part Number | 25216 |
| Position | Direct Fit Oxygen Sensor, Downstream Right |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 18.000 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 26.7500 |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2015 | Audi | Q7 | 3.0L | V6 | GAS | Downstream Right | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
| 2014 | Audi | Q7 | 3.0L | V6 | GAS | Downstream Right | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
| 2013 | Audi | Q7 | 3.0L | V6 | GAS | Downstream Right | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
| 2012 | Audi | Q7 | 3.0L | V6 | GAS | Downstream Right | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
| 2011 | Audi | Q7 | 3.0L | V6 | GAS | Downstream Right | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.