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NTK 25655 Oxygen Sensor - Downstream Left
| Brand | NTK 25655 |
|---|---|
| Position | Downstream Left |
| Wiring Harness Length | 45.0000 |
| 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 | BMW · 6 vehicles |
Direct-fit replacement. Specific-fit oxygen sensor with OE-style application coverage.
Heated sensor design. Supports faster exhaust feedback for emission control service.
OE-focused testing. Manufactured and tested to meet or exceed OE specifications.
Cross-references Bosch 15335, 75-3465 and 234-4472 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 25655 is a specific-fit, heated sensor built for emission control service. It uses a threaded mounting design with a 45-inch harness and 4-wire configuration for direct-fit replacement applications.
- Heated oxygen sensor for emission control service
- Specific-fit design for direct replacement applications
- Threaded mounting with 18 mm thread diameter
- 45-inch wiring harness and 4-wire layout
Fitment and Application
Fits 2004-2006 BMW X5, downstream left. This part cross-references Bosch 15335 for the same application.
For BMW X5 oxygen sensor replacement, part number 25655 matches the downstream left location listed in the fitment data. The direct-fit design supports OE-style service on the 2004-2006 BMW X5, and the heated sensor construction helps maintain proper exhaust monitoring response. NTK 25655 is also referenced against common interchange numbers 75-3465 and 234-4472.
What It Helps Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel ratio feedback from a worn sensor
- Slow sensor response during exhaust monitoring
- Faults tied to downstream oxygen sensor replacement
Installation Notes and Quality
Use the threaded mounting point and harness length to match the original routing before installation. Confirm the connector style, wire count, and downstream left position against the removed sensor to ensure proper fit on the BMW X5.
NTK is a major original equipment oxygen sensor supplier, and its sensors are manufactured and tested to meet or exceed OE specifications for fit, form, and function. Part number 25655 reflects that OE-focused approach for import and domestic applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2006 | BMW | X5 | 4.8L | V8 | Downstream Left | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2006 | BMW | X5 | 4.4L | V8 | Downstream Left | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2005 | BMW | X5 | 4.8L | V8 | Downstream Left | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2005 | BMW | X5 | 4.4L | V8 | Downstream Left | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2004 | BMW | X5 | 4.8L | V8 | Downstream Left | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2004 | BMW | X5 | 4.4L | V8 | Downstream Left | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
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