NTK 25675 Oxygen Sensor - Downstream or Downstream Right
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NTK
 Direct Fit Oxygen Sensor

NTK 25675 Oxygen Sensor - Downstream or Downstream Right

Brand NTK 25675
Position Downstream and Downstream Right
Wiring Harness Length 20.7500
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, Porsche, and Volkswagen · 71 vehicles

Direct-fit design. Application-specific replacement sensor with OE-style fit, form, and function.

Heated sensor. Built with a 4-wire layout for stable signal and heater circuit operation.

OE-tested quality. Manufactured and tested to meet or exceed OE specifications.

Cross-references BBB Industries 16383, Bosch 16002 and Bosch 16136 for the same application. See all 25.

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Direct-fit oxygen sensor for import applications

NTK Oxygen Sensor 25675 is a specific-fit, heated oxygen sensor built for downstream applications. It uses a threaded mounting design with a 20.7500 wiring harness length and 4-wire construction for a direct-fit replacement approach.

Compatible with Audi A3, Audi A3 Quattro, Audi A8 Quattro, Audi Q7, Audi RS4, Audi S6, Audi S8, Porsche Cayenne, Volkswagen Eos, Volkswagen GTI, Volkswagen Jetta, Volkswagen R32, and Volkswagen Touareg applications listed below, this sensor is engineered for OE-style fit, form, and function. This part cross-references Bosch (e.g., 16002, 16136) for the same application.

Key features

  • Heated oxygen sensor for downstream exhaust monitoring
  • Specific-fit design for direct replacement applications
  • Threaded mounting type for secure installation
  • 4-wire configuration for signal and heater circuit operation
  • 20.7500 harness length for application-specific routing
  • 18.000 thread diameter

Detailed description

NTK 25675 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific coverage and OE-style replacement geometry. NTK draws on its role as a major original equipment oxygen sensor supplier and uses controlled ceramic technology from raw material through finished sensor production. The result is a sensor line built around fit, form, and function for import and domestic emission control needs.

For fitment, this sensor covers downstream positions across multiple Audi, Volkswagen, and Porsche models, including Fits 2006-2011 Volkswagen GTI, downstream and Fits 2007-2010 Volkswagen Touareg, downstream right. It also applies to Fits 2007-2010 Audi Q7, downstream right and other listed applications where the original sensor location and configuration match the catalog data. Part number 25675 is the reference to verify before ordering.

What this part is used for

  • Replacing a failed downstream oxygen sensor
  • Addressing oxygen sensor fault codes
  • Restoring exhaust feedback for engine management
  • Correcting drivability issues tied to sensor signal loss
  • Resolving emissions-related inspection failures

Installation notes and tips

Confirm the vehicle year, make, model, and downstream position against the fitment table before installation. Match the sensor connector, wire count, and threaded mounting style to the original unit. Use the part number 25675 to verify application coverage, especially on Audi A3, Audi Q7, and Volkswagen Jetta listings with multiple downstream configurations.

Quality assurance

NTK states that these oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand also positions itself as a major OE oxygen sensor supplier, supporting application-specific coverage for import and domestic vehicles.

Related reading

This part fits 71 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersFuel TypePositionNotes
2012AudiA8 Quattro—4.2LV8—DownstreamCyls. 1-4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2011AudiA3 QuattroAWD2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2011AudiA8 Quattro—4.2LV8—DownstreamCyls. 1-4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2011AudiS6—5.2LV10—DownstreamCyls. 4, 5; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2011VolkswagenEos—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2011VolkswagenEos—2.0LL4—DownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2011VolkswagenGTI—2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2011VolkswagenGTI—2.0LL4GASDownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2010AudiA3FWD2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2010AudiA3—2.0LL4GASDownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2010AudiA3 QuattroAWD2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2010AudiQ7—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2010AudiS6—5.2LV10—DownstreamCyls. 4, 5; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2010PorscheCayenne—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2010VolkswagenEos—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2010VolkswagenEos—2.0LL4—DownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2010VolkswagenGTI—2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2010VolkswagenGTI—2.0LL4GASDownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2010VolkswagenJetta—2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2010VolkswagenJetta—2.0LL4GASDownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2010VolkswagenTouareg—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009AudiA3FWD2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009AudiA3—2.0LL4—DownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2009AudiA3 Quattro—3.2LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009AudiA3 Quattro—2.0LL4—DownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2009AudiA3 QuattroAWD2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009AudiQ7—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009AudiS6—5.2LV10—DownstreamCyls. 4, 5; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2009AudiS8—5.2LV10—DownstreamCylinders 1-3 downstream oxygen sensor equivalent to OE design.; Direct Fit Oxygen Sensor
2009AudiS8—5.2LV10—DownstreamCyls. 4, 5; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2009PorscheCayenne—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009VolkswagenEos—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009VolkswagenEos—2.0LL4—DownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2009VolkswagenGTI—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009VolkswagenGTI—2.0LL4—DownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2009VolkswagenJetta—2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2009VolkswagenJetta—2.0LL4GASDownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2009VolkswagenTouareg—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008AudiA3—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008AudiA3—2.0LL4—DownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2008AudiA3 Quattro—3.2LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008AudiQ7—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008AudiRS4—4.2LV8—DownstreamCyls. 1-4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2008AudiS6—5.2LV10—DownstreamCyls. 4, 5; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2008AudiS8—5.2LV10—DownstreamCyls. 4, 5; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2008AudiS8—5.2LV10—DownstreamCylinders 1-3 downstream oxygen sensor equivalent to OE design.; Direct Fit Oxygen Sensor
2008PorscheCayenne—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008VolkswagenEos—3.2LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008VolkswagenEos—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008VolkswagenGTI—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008VolkswagenGTI—2.0LL4—DownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2008VolkswagenJetta—2.0LL4GASDownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008VolkswagenJetta—2.0LL4GASDownstreamAfter catalyst oxygen sensor, Bank 1 Sensor 3, designed equivalent to OE specifications; Direct Fit Oxygen Sensor
2008VolkswagenR32—3.2LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2008VolkswagenTouareg—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007AudiA3—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007AudiA3 Quattro—3.2LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007AudiQ7—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007AudiRS4—4.2LV8—DownstreamCyls. 1-4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2007AudiS6—5.2LV10—DownstreamCyls. 4, 5; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2007AudiS8—5.2LV10—DownstreamCyls. 4, 5; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor
2007AudiS8—5.2LV10—DownstreamCylinders 1-3 downstream oxygen sensor equivalent to OE design.; Direct Fit Oxygen Sensor
2007VolkswagenEos—3.2LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007VolkswagenEos—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007VolkswagenGTI—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007VolkswagenJetta—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2007VolkswagenTouareg—3.6LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2006AudiA3—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2006AudiA3 Quattro—3.2LV6—Downstream RightDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2006VolkswagenGTI—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
2006VolkswagenJetta—2.0LL4—DownstreamDownstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor
Directly replaces or cross-references 25 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BBB Industries — 16383Bosch — 16002Bosch — 16136Delphi — ES20378DENSO Auto Parts — 234-4485DENSO Auto Parts — 234-4754DENSO Auto Parts — 234-4849Remy — 16741Remy — 1688906F906262P06J906262K07L906265G75-374275-375275-376675-385075-3958234-4831234-48341661316837022906262AG022906262BM022906262CE95560613630