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NTK 25724 Oxygen Sensor - Downstream
| Brand | NTK 25724 |
|---|---|
| Position | Downstream |
| Wiring Harness Length | 67.0000 |
| 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 Bentley · 6 vehicles |
Direct-fit design. Specific-fit replacement for streamlined installation and OE-style form.
Heated sensor. Built for faster operating response in emission control systems.
OE-tested quality. Extensively tested during manufacturing to meet or exceed OE specifications.
Cross-references Bosch 16982, DENSO Auto Parts 234-4809 and Walker Exhaust 16665 for the same application. See all 4.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Direct-Fit Oxygen Sensor
NTK Oxygen Sensor 25724 is a specific-fit, heated oxygen sensor built for downstream applications with threaded mounting and a 4-wire design. It is engineered for direct-fit replacement where OE-equivalent form and function are required.
- Heated oxygen sensor for faster operating response.
- Specific-fit design for direct replacement use.
- Threaded mounting with 18 mm thread diameter.
- 67-inch wiring harness length for application-specific routing.
- 4-wire configuration for controlled signal output.
Fitment and Application Details
Fits 2015 Bentley Continental, downstream. Fits 2005-2009 Audi A8 Quattro, downstream. This NTK oxygen sensor 25724 is listed for OE-equivalent direct-fit applications, including Audi A8 Quattro and Bentley Continental coverage in downstream locations.
NTK, part number 25724, is part of the Direct Fit Oxygen Sensor line. The brand focuses on application-specific oxygen sensors with streamlined coverage and OE-style fit, form, and function. As an original equipment oxygen sensor supplier, NTK builds this sensor to match the requirements of modern emission control systems.
What It Helps Address
- Check engine light concerns related to oxygen sensor performance.
- Incorrect air-fuel ratio feedback from a worn sensor.
- Slow sensor response in heated downstream monitoring circuits.
- Emission control faults tied to specific-fit sensor replacement needs.
Installation Notes and Quality
Use the threaded mounting design and harness length to match the original routing and connector layout before installation. Verify the downstream location and engine-specific notes for the exact application. NTK states that these oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications for quality and reliability.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2015 | Bentley | Continental | 6.0L | W12 | Downstream | Cyls. 7-12; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2009 | Audi | A8 Quattro | 6.0L | W12 | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2008 | Audi | A8 Quattro | 6.0L | W12 | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2007 | Audi | A8 Quattro | 6.0L | W12 | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2006 | Audi | A8 Quattro | 6.0L | W12 | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2005 | Audi | A8 Quattro | 6.0L | W12 | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
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