NTK
NTK Oxygen Sensor
NTK Oxygen Sensor
Regular price
$120.11 USD
Regular price
Sale price
$120.11 USD
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
Oxygen Sensor from NTK. The part number and specifications are listed below. A failed sensor usually sets a check-engine code and can cause poor running or wrong readings.
Quick facts
- Brand: NTK
- Part type: Sensor
Specifications
- Parts Interchange: 25621, 25621, 80054039065, 800 54039 065
Listed fitment
- 2002 - 2004 Audi A6 Base, Luxury
- 2003 - 2004 Audi A6 Confort
- 2002 Audi A6 Premium
- 2002 - 2004 Audi A6 Quattro Avant, Base
- 2002 Audi A6 Quattro Luxury
- 2003 - 2004 Audi A6 Quattro S Line
- 2005 - 2008 Audi A8 Quattro L Plus
- 2005 - 2009 Audi A8 Quattro Plus, Base, L
- 2002 - 2005 Audi Allroad Quattro Base
- 2007 - 2008 Audi RS4 Base
- 2008 Audi RS4 Cabriolet
- 2004 - 2008 Audi S4 Base, Avant
- 2004 - 2009 Audi S4 Cabriolet
- 2003 Bentley Continental R, T, GT
- 2002 Volkswagen Cabrio Final Edition
- 2000 - 2002 Volkswagen Cabrio GL, GLS
- 2001 - 2002 Volkswagen Cabrio GLX
- 2001 - 2003 Volkswagen EuroVan Base, GLS, MV
- 2004 Volkswagen Golf GTI VR6, GL, GLS TDI, GL TDI, GLS, Comfortline, GTI, GTI 1.8T, Trendline, Europa
- 2004 Volkswagen R32 Base
- 2005 - 2007 Volkswagen Touareg Base
- 2004 - 2007 Volkswagen Touareg V6, TDI, V8, V6 Premium
Tip: Read the code, check the wiring and connector, and clear codes after the new sensor is in.

Before you order: fitment and what to plan
Sensors tell the engine computer what is happening so it can adjust fuel, timing and gauges.
Fitment notes
- Specs, lead time and warranty come from NTK and can change. The details above this guide are the latest we have.
Not sure it fits? Send us your year, make, model, engine and trim and we'll check before you order.
Ask about fitmentPlan the whole job
- Connector and wiring. Corroded connectors mimic a bad sensor.
More for your car: Oxygen (O2) Sensors · Batteries & electrical
Questions about sensor
Will this fit my car?
Check the title and details above for the vehicles and part number it is listed for. If you are not sure, contact us with your year, make, model, engine and trim and we will confirm fitment before you order.
Will a new sensor clear my check-engine light?
If the sensor was the cause, the light usually goes off after codes are cleared or after a few drive cycles.
Where do specs and warranty details come from?
From NTK. Each brand sets its own specs, lead times and warranty terms, and they can change. The product details above are the latest we have.
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