NTK 25687 Oxygen Sensor
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NTK
 Direct Fit Oxygen Sensor

NTK 25687 Oxygen Sensor

Brand NTK 25687
Position Downstream Right, Intermediate, Downstream, and Downstream Left
Wiring Harness Length 51.2500
Sensor Type Heated
Universal Or Specific Fit Specific
Wire Quantity 4
Thread Diameter 18.000
Mounting Type Threaded
Product line Direct Fit Oxygen Sensor
Fits Audi and Volkswagen · 98 vehicles

Direct fit design. Application-specific replacement for the listed oxygen sensor locations.

Heated sensor. Helps the sensor reach operating temperature quickly for stable signal output.

OE-style engineering. Built to match fit, form, and function for covered import applications.

Cross-references Bosch 16984, Bosch 16986 and DENSO Auto Parts 234-4829 for the same application. See all 12.

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Not what you need? See all Oxygen Sensor options

Direct Fit Oxygen Sensor for Volkswagen and Audi

NTK oxygen sensor 25687 is a direct fit, threaded heated sensor built for specific applications across Volkswagen and Audi models. It is engineered for OE-style fit, form, and function, with a 4-wire design and a 51.25-inch harness for the listed vehicles.

Key Features

  • Direct fit oxygen sensor for specific applications
  • Heated sensor design for faster operating response
  • 4-wire configuration with threaded mounting
  • 18 mm thread diameter
  • OE-equivalent design for the listed Volkswagen and Audi fitments

Detailed Description

Part number 25687 is part of NTK’s Direct Fit Oxygen Sensor line, which focuses on application-specific replacement sensors rather than universal coverage. NTK draws on its OE sensor manufacturing background to deliver a replacement that matches the required fitment and electrical configuration for the vehicle applications shown here. This sensor is listed for downstream and intermediate positions on select Volkswagen Passat, Volkswagen CC, Volkswagen Touareg, Audi R8, and other covered models.

For buyers searching for a Volkswagen Passat oxygen sensor or Audi R8 downstream oxygen sensor, this part number 25687 provides a direct replacement path for the exact applications in the fitment table. It is also cross-referenced to Bosch 16984 and 16986 for the same application.

What It Is Used For

  • Replacing a failed heated oxygen sensor
  • Restoring accurate exhaust gas feedback to the engine control system
  • Addressing check engine light concerns related to oxygen sensor performance
  • Correcting drivability issues tied to sensor signal degradation
  • Replacing an OE-style sensor with the proper threaded, wired configuration

Installation Notes and Tips

Verify the exact year, make, model, and sensor position before ordering. This part uses a threaded mounting type and a 4-wire harness, so connector style and routing should be matched to the original sensor on the vehicle. Confirm the listed downstream or intermediate location in the fitment data before installation.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand also emphasizes OE application technology and original equipment sensor manufacturing experience for consistent fit and performance.

Related reading

This part fits 98 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersFuel TypePositionNotes
2018VolkswagenPassat—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2018VolkswagenPassat—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2017VolkswagenCC—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2017VolkswagenCC—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2017VolkswagenPassat—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2017VolkswagenPassat—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2017VolkswagenTouareg—3.6LV6—Downstream RightEquivalent OE design oxygen sensor; Direct Fit Oxygen Sensor
2017VolkswagenTouareg—3.6LV6—Downstream LeftEquivalent OE design oxygen sensor; Direct Fit Oxygen Sensor
2016VolkswagenCC—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2016VolkswagenCC—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2016VolkswagenEos—2.0LL4—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2016VolkswagenPassat—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2016VolkswagenPassat—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2016VolkswagenTouareg—3.6LV6—Downstream RightEquivalent OE design oxygen sensor; Direct Fit Oxygen Sensor
2016VolkswagenTouareg—3.6LV6—Downstream LeftEquivalent OE design oxygen sensor; Direct Fit Oxygen Sensor
2015AudiR8—5.2LV10—DownstreamCyls. 1-5; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2015AudiR8—5.2LV10—DownstreamCyls. 6-10; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2015AudiR8—4.2LV8—DownstreamCyls. 5-8; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2015AudiR8—4.2LV8—DownstreamCyls. 1-4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2015AudiTT Quattro—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2015AudiTTS Quattro—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2015VolkswagenCC—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2015VolkswagenCC—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2015VolkswagenEos—2.0LL4—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2015VolkswagenPassat—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2015VolkswagenPassat—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2015VolkswagenTouareg—3.6LV6—Downstream Rightw/o ULEV II Emissions Standard; OE Equivalent Design; Direct Fit Oxygen Sensor
2015VolkswagenTouareg—3.6LV6—Downstream LeftEquivalent OE design oxygen sensor; Direct Fit Oxygen Sensor
2015VolkswagenTouareg—3.0LV6ELECTRIC/GASDownstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2014AudiR8—5.2LV10—DownstreamCyls. 6-10; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2014AudiR8—5.2LV10—DownstreamCyls. 1-5; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2014AudiR8—4.2LV8—DownstreamCyls. 5-8; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2014AudiR8—4.2LV8—DownstreamCyls. 1-4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2014AudiTT Quattro—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2014AudiTTS Quattro—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2014VolkswagenCC—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2014VolkswagenCC—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2014VolkswagenEos—2.0LL4—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2014VolkswagenGolf—2.5LL5—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2014VolkswagenGTI—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2014VolkswagenPassat—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2014VolkswagenPassat—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2014VolkswagenPassat—2.5LL5—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2014VolkswagenTouareg—3.6LV6—Downstream Rightw/o ULEV II Emissions Standard; OE Equivalent Design; Direct Fit Oxygen Sensor
2014VolkswagenTouareg—3.6LV6—Downstream LeftEquivalent OE design oxygen sensor; Direct Fit Oxygen Sensor
2014VolkswagenTouareg—3.0LV6ELECTRIC/GASDownstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2013AudiA3—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2013AudiTT Quattro—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2013AudiTTS Quattro—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2013VolkswagenBeetle—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2013VolkswagenCC—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2013VolkswagenCC—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2013VolkswagenEos—2.0LL4—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2013VolkswagenGolf—2.5LL5—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2013VolkswagenGolf—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2013VolkswagenGolf R—2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2013VolkswagenGTI—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2013VolkswagenJetta—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2013VolkswagenPassat—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2013VolkswagenPassat—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2013VolkswagenPassat—2.5LL5—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2013VolkswagenTouareg—3.6LV6—Downstream Rightw/o ULEV II Emissions Standard; OE Equivalent Design; Direct Fit Oxygen Sensor
2013VolkswagenTouareg—3.6LV6—Downstream LeftEquivalent OE design oxygen sensor; Direct Fit Oxygen Sensor
2013VolkswagenTouareg—3.0LV6ELECTRIC/GASDownstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2012AudiA3—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012AudiR8—5.2LV10—DownstreamCyls. 6-10; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012AudiR8—5.2LV10—DownstreamCyls. 1-5; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012AudiR8Convertible4.2LV8—DownstreamCyls. 5-8; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012AudiR8Convertible4.2LV8—DownstreamCyls. 1-4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012AudiTT Quattro—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2012AudiTTS Quattro—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2012VolkswagenBeetle—2.0LL4—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012VolkswagenCC—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2012VolkswagenCC—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012VolkswagenEos—2.0LL4—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012VolkswagenGolf—2.5LL5—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012VolkswagenGolf R—2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2012VolkswagenGTI—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012VolkswagenJetta—2.0LL4GASIntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012VolkswagenPassat—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2012VolkswagenPassat—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2012VolkswagenPassat—2.5LL5—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2012VolkswagenTouareg—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2012VolkswagenTouareg—3.0LV6ELECTRIC/GASDownstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2011AudiR8—5.2LV10—DownstreamCyls. 6-10; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2011AudiR8—5.2LV10—DownstreamCyls. 1-5; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2011VolkswagenCC—2.0LL4—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2011VolkswagenTouareg—3.6LV6—Downstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2011VolkswagenTouareg—3.0LV6ELECTRIC/GASDownstream LeftOxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor
2010AudiQ7—4.2LV8GASDownstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2010VolkswagenCC—2.0LL4—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2010VolkswagenPassat—2.0LL4—IntermediateLocated in Catalyst; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2009AudiQ7—4.2LV8GASDownstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009VolkswagenTouareg—4.2LV8—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008AudiQ7—4.2LV8GASDownstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008VolkswagenTouareg—4.2LV8—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007AudiQ7—4.2LV8—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007VolkswagenTouareg—4.2LV8—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 16984Bosch — 16986DENSO Auto Parts — 234-4829Remy — 168511K0998262C1K0998262E06J906262C75-385575-4082234-4833234-4842079906262G