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NTK 25260 Oxygen Sensor - Downstream Right
| Brand | NTK 25260 |
|---|---|
| Position | Downstream Right |
| 11589 | Metric |
| Heated | Yes |
| Wiring Harness Length | 11.75 |
| Wiring Harness Length | 301.00 |
| Sensor Type | Narrow-band |
| Terminal Type | Blade |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Grade Type | Standard replacement |
| Connector Shape | Oval |
| Terminal Quantity | 4 |
| Connector Gender | Female |
| Terminal Gender | Male |
| Wrench Size | 7/8" (22mm) |
| Thread Size | M18 - 1.5 |
| Mounting Type | Threaded |
| Heated | Yes |
| Hex Size | 7/8" (22mm) |
| Technology | Switching zirconia type |
| Product line | Direct Fit Oxygen Sensor |
| Fits | Audi · 2 vehicles |
Direct-fit replacement. Specific-fit oxygen sensor for a precise OE-style match.
Heated narrow-band design. Switching zirconia construction with 4-wire blade terminals.
OE-focused engineering. NTK supplies OEM oxygen sensors and controls ceramic production in-house.
Cross-references DENSO Auto Parts 234-4991 and 4M0906265F for the same application. See all 2.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Direct-Fit Oxygen Sensor
The NTK 25260 is a direct-fit oxygen sensor built for specific applications and engineered to restore accurate exhaust feedback to the engine control system. It uses a heated, narrow-band switching zirconia design with a 4-wire blade-terminal layout and an oval female connector for a precise replacement match.
Key Features
- Direct-fit replacement oxygen sensor for specific applications
- Heated narrow-band switching zirconia design
- 4-wire configuration with blade terminals
- Oval female connector and threaded M18 x 1.5 mounting
- 7/8 in. (22 mm) hex and wrench size
- Standard replacement grade from NTK, part number 25260
Detailed Description
NTK 25260 is a specific-fit oxygen sensor that provides closed-loop feedback to the ECU so the engine can maintain the correct air-fuel ratio and monitor emissions-related performance. As an OE-focused sensor from NTK, part number 25260 uses a heated narrow-band switching zirconia element, 4 terminals, and a threaded mount for direct replacement service. This part cross-references DENSO Auto Parts (e.g., 234-4991) for the same application.
Compatible with 2018-2019 Audi Q7, downstream right. The fitment data identifies this sensor for the downstream right position on those model years, making it a targeted replacement for the Audi Q7 application listed here.
What It Is Used For
- Replacing a failed oxygen sensor that triggers diagnostic trouble codes
- Restoring accurate air-fuel ratio feedback to the ECU
- Addressing poor fuel control caused by an aging sensor element
- Supporting emissions monitoring when catalyst efficiency data is being evaluated
- Correcting drivability issues tied to inaccurate exhaust oxygen readings
Installation Notes and Tips
Verify the connector shape, terminal count, thread size, and heated sensor configuration before installation. Use the listed wrench size and hex size to confirm tool access, and match the downstream right application exactly for the Audi Q7. The part number 25260 should be checked against the original sensor and vehicle service information before replacement.
Quality Assurance
NTK is a major OEM oxygen sensor supplier with OE application technology and in-house ceramic element control from raw material through finished sensor production.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2019 | Audi | Q7 | 3.0L | V6 | Downstream Right | OE MFR: NTK; Direct Fit Oxygen Sensor |
| 2018 | Audi | Q7 | 3.0L | V6 | Downstream Right | OE MFR: NTK; Direct Fit Oxygen Sensor |
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