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Audi Porsche VW Oxygen Sensor 25656 – NTK

Audi Porsche VW Oxygen Sensor 25656 – NTK

NTK
Disponibilidad:
Agotado
SKU 25656
Agotado
$13.14 - $13.14
$13.14
$13.14 - $13.14
$13.14
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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This NTK 25656 oxygen sensor is a direct-fit replacement for select Audi, Porsche, and VW models. It provides precise exhaust oxygen measurement to optimize air-fuel ratio, improving fuel efficiency and reducing emissions. NTK sensors are known for OE-level performance and durability.

Key Features & Benefits

  • Heated Sensor: Fast activation for accurate readings from startup.
  • OE-Grade Construction: Manufactured to strict OEM specifications.
  • Direct Fit: No cutting or splicing required.
  • 100,000+ Mile Service Life: Long-lasting reliability.

Vehicle Fitment

Make Model Years Engine
Audi A8 Quattro 2012–2014 6.3W12
Audi R8 2008–2012 4.2V8
Volkswagen GTI 2008–2009 2.0L4
Volkswagen GTI 2010–2011 2.0L4
Volkswagen Eos 2009–2011 2.0L4
Volkswagen CC 2009–2011 3.6V6
Audi A3 2008–2011 2.0L4
Volkswagen Touareg 2007–2010 3.6V6
Volkswagen Jetta 2008–2010 2.0L4
Porsche Cayenne 2008–2010 3.6V6
Audi R8 2009–2010 5.2V10
Audi Q7 2007–2010 3.6V6
Audi A8 Quattro 2007–2010 4.2V8
Audi A4 Quattro 2005–2008 2.0L4
Audi A4 Quattro 2009 2.0L4
Audi A4 2005–2008 2.0L4
Audi A4 2009 2.0L4
Audi A3 Quattro 2009 2.0L4
Volkswagen Passat 2008 3.6V6
Audi A6 Quattro 2005–2006 4.2V8

Technical Specifications

Part Number 25656

Installation Notes

Professional installation recommended for proper fitment.

About NTK

NTK (NGK Spark Plugs) is a leading manufacturer of oxygen sensors with OE-quality performance and precise measurement.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 20 applications
D4 A8
Make Model Engine Years
Audi A8 Quattro 6.3W12 2012–2014
Type 42 R8
Make Model Engine Years
Audi R8 4.2V8 2008–2012
Audi R8 5.2V10 2009–2010
MK5 GTI
Make Model Engine Years
Volkswagen GTI 2.0L4 2008–2009
MK6 GTI
Make Model Engine Years
Volkswagen GTI 2.0L4 2010–2011
Eos
Make Model Engine Years
Volkswagen Eos 2.0L4 2009–2011
CC
Make Model Engine Years
Volkswagen CC 3.6V6 2009–2011
8P A3
Make Model Engine Years
Audi A3 2.0L4 2008–2011
Audi A3 Quattro 2.0L4 2009–2009
7L Touareg
Make Model Engine Years
Volkswagen Touareg 3.6V6 2007–2010
MK5 Jetta
Make Model Engine Years
Volkswagen Jetta 2.0L4 2008–2010
957 Cayenne
Make Model Engine Years
Porsche Cayenne 3.6V6 2008–2010
4L Q7
Make Model Engine Years
Audi Q7 3.6V6 2007–2010
D3 A8
Make Model Engine Years
Audi A8 Quattro 4.2V8 2007–2010
B7 A4
Make Model Engine Years
Audi A4 Quattro 2.0L4 2005–2008
Audi A4 2.0L4 2005–2008
B8 A4
Make Model Engine Years
Audi A4 Quattro 2.0L4 2009–2009
Audi A4 2.0L4 2009–2009
B6 Passat
Make Model Engine Years
Volkswagen Passat 3.6V6 2008–2008
C6 A6
Make Model Engine Years
Audi A6 Quattro 4.2V8 2005–2006
Fits 20 vehicle applications Check vehicle fitment before ordering View fitment

About this Oxygen Sensor

The NTK 25656 oxygen sensor measures the oxygen in the exhaust so the engine computer can keep the fuel mixture correct. Sensors before the catalytic converter control the mixture; sensors after it monitor the converter's efficiency.

Frequently asked questions

What does an oxygen sensor do?

It reports how rich or lean the exhaust is, and the engine computer adjusts fuel delivery in response. A faulty sensor can make the engine run too rich or too lean.

What are the signs of a failing oxygen sensor?

A check-engine light with oxygen-sensor or fuel-trim codes, poorer fuel economy, rough idle, or a failed emissions test. Exhaust leaks near the sensor can cause similar codes, so check for those too.

How do I know which sensor I need?

Sensors are specific to their position: upstream (before the catalytic converter) or downstream (after it), and on V engines, bank 1 or bank 2. The fault code usually identifies the position; check the product details for the position this sensor fits.

Can I replace an oxygen sensor myself?

Usually, yes, using an oxygen-sensor socket. Many new sensors come with anti-seize already on the threads; if not, use a sensor-safe compound only on the threads, and keep it off the sensor tip.

How do I make sure this oxygen sensor fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

Euromotiv is an independent retailer of OEM, Genuine, and aftermarket automotive parts. We are not affiliated with, endorsed by, or authorized by Audi AG, Volkswagen AG, BMW AG, Mercedes-Benz Group AG, Dr. Ing. h.c. F. Porsche AG, MINI, or any other vehicle manufacturer. All trademarks, logos, and brand names are the property of their respective owners and are used solely for identification and compatibility purposes.