NTK 25765 Oxygen Sensor - Downstream
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NTK
 Direct Fit Oxygen Sensor

NTK 25765 Oxygen Sensor - Downstream

Brand NTK 25765
Position Downstream
Wiring Harness Length 28.5000
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 · 6 vehicles

Direct fit design. Specific-fit replacement for streamlined installation and OE-style application matching.

Heated sensor. Supports faster operating response for accurate exhaust monitoring.

OE-tested quality. Extensively tested during manufacturing to meet or exceed OE specifications.

Cross-references 07P906265F, 07P906265K and 07P906265L for the same application. See all 3.

$140.29Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Direct Fit Oxygen Sensor Details

The NTK 25765 is a direct fit heated oxygen sensor built for specific applications that require threaded mounting and OE-equivalent performance. It is engineered for precise fit, stable signal response, and reliable exhaust monitoring on Audi A8 Quattro applications.

  • Heated oxygen sensor for faster operating response.
  • Specific-fit design for direct replacement applications.
  • Threaded mounting with an 18 mm thread diameter.
  • 4-wire configuration with a 28.5 in. harness length.
  • NTK 25765 is manufactured to meet or exceed OE specifications.

Fitment

Compatible with 2015-2016 Audi A8 Quattro, downstream. Fits 2015-2016 Audi A8 Quattro, downstream, Cyls. 7, 9, 11. Fits 2015-2016 Audi A8 Quattro, downstream, Cyls. 8, 10, 12. Fits 2015-2016 Audi A8 Quattro, downstream, Cyls. 2, 4, 6.

What It Helps Address

  • Check engine light from oxygen sensor faults.
  • Incorrect air-fuel ratio readings.
  • Slow sensor response during closed-loop operation.
  • Exhaust monitoring issues on downstream circuits.

Installation Notes

Verify the connector, thread size, harness length, and downstream location before installation. This NTK oxygen sensor uses a threaded mounting style and a specific-fit configuration, so matching the original application details is important. Part number 25765 should be confirmed against the vehicle’s original sensor specification before replacement.

Quality Assurance

NTK is part of the NGK family of products and is a major original equipment oxygen sensor supplier. The 25765 is extensively tested during manufacturing to support quality and reliability that meets or exceeds OE specifications. This part cross-references Volkswagen/Audi OE numbers 07P906265F and 07P906265K for the same application.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2016AudiA8 Quattro6.3LW12DownstreamCyls. 7, 9, 11; OE Equivalent Design; Direct Fit Oxygen Sensor
2016AudiA8 Quattro6.3LW12DownstreamCyls. 8, 10, 12; OE Equivalent Design; Direct Fit Oxygen Sensor
2016AudiA8 Quattro6.3LW12DownstreamCyls. 2, 4, 6; OE Equivalent Design; Direct Fit Oxygen Sensor
2015AudiA8 Quattro6.3LW12DownstreamCyls. 8, 10, 12; OE Equivalent Design; Direct Fit Oxygen Sensor
2015AudiA8 Quattro6.3LW12DownstreamCyls. 7, 9, 11; OE Equivalent Design; Direct Fit Oxygen Sensor
2015AudiA8 Quattro6.3LW12DownstreamCyls. 2, 4, 6; OE Equivalent Design; Direct Fit Oxygen Sensor
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
07P906265F07P906265K07P906265L