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NTK
Direct Fit Oxygen SensorNTK 25711 Oxygen Sensor - Downstream
| Brand | NTK 25711 |
|---|---|
| Position | Downstream |
| Wiring Harness Length | 21.7500 |
| 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 | BMW · 103 vehicles |
Direct-fit design. Matches the original application layout for straightforward replacement service.
Heated sensor. Helps the sensor reach operating temperature quickly for responsive exhaust monitoring.
OE-style coverage. Built for select BMW applications with application-specific fitment and connector requirements.
Cross-references 11787645875, 11787848487 and 11788603903 for the same application. See all 3.
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Direct-Fit Downstream Oxygen Sensor
NTK Oxygen Sensor 25711 is a specific-fit, heated downstream sensor built for direct replacement service. It uses a threaded mounting design and a 4-wire configuration to match the original application requirements on select BMW models.
As part of NTK's Direct Fit Oxygen Sensor line, this unit is engineered for OE-style fit, form, and function. NTK 25711 is a practical choice for BMW i3, BMW M2, and BMW 640i applications where accurate downstream exhaust feedback is required.
Key Features
- Specific-fit oxygen sensor for direct replacement service
- Heated sensor design for faster operating response
- Threaded mounting type for OE-style installation
- 4-wire construction for the listed application
- 21.75-inch wiring harness length
- 18 mm thread diameter
Detailed Description
NTK 25711 is a downstream oxygen sensor designed for select BMW vehicles, including BMW i3, BMW M2, BMW M4, BMW X5, and related 3, 4, 5, and 6 Series applications listed in the fitment data. The direct-fit design follows the original equipment layout, helping maintain proper sensor placement and connector compatibility without universal adaptation. This part number, 25711, is part of NTK's Direct Fit Oxygen Sensor product line, which focuses on application-specific coverage for import and domestic vehicles.
NTK manufactures oxygen sensors with ceramic expertise and extensive production testing to meet OE-level specifications. This sensor is intended for downstream exhaust monitoring on the listed BMW applications, including models such as the BMW 640i and BMW 335i, where the sensor location and configuration must match the factory setup. Part number 25711 also cross-references BMW OE numbers 11787645875 and 11787848487 for the same application.
What It Helps Address
- Fault codes related to downstream oxygen sensor performance
- Incorrect air-fuel feedback from a worn sensor
- Slow sensor response caused by age or contamination
- Exhaust monitoring issues on the listed BMW applications
- Fitment problems from using a universal sensor instead of a direct-fit unit
Installation Notes and Quality
Verify the vehicle's year, model, and downstream sensor location before installation. Match the threaded mounting style, wire count, and harness length to the original part. Use the fitment notes for application-specific details such as cylinder-bank references where listed.
NTK states that these oxygen sensors are extensively tested during manufacturing to support quality and reliability that meet or exceed OE specifications.
This part fits 103 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2021 | BMW | i3 | — | 0.6L | L2 | BATTERY W/RANGE EXT (BEV REX) | Downstream | OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2021 | BMW | i3s | — | 0.6L | L2 | BATTERY W/RANGE EXT (BEV REX) | Downstream | OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2021 | BMW | M2 | — | 3.0L | L6 | — | Downstream | OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2020 | BMW | i3 | — | 0.6L | L2 | BATTERY W/RANGE EXT (BEV REX) | Downstream | OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2020 | BMW | i3s | — | 0.6L | L2 | BATTERY W/RANGE EXT (BEV REX) | Downstream | OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2020 | BMW | M2 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2020 | BMW | M4 | — | 3.0L | L6 | — | Downstream | OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2019 | BMW | 640i Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2019 | BMW | 640i xDrive Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2019 | BMW | i3 | — | 0.6L | L2 | ELECTRIC/GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2019 | BMW | i3s | — | 0.6L | L2 | ELECTRIC/GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2019 | BMW | M2 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2019 | BMW | M4 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2019 | BMW | X6 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | 640i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | 640i Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | 640i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | 640i xDrive Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | i3 | — | 0.6L | L2 | ELECTRIC/GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | i3s | — | 0.6L | L2 | ELECTRIC/GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | M2 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | M3 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2018 | BMW | M4 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2018 | BMW | X4 | M40i | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | X5 | — | 3.0L | L6 | GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2018 | BMW | X6 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | 535i GT | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | 535i GT xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | 640i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | 640i Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | 640i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | 640i xDrive Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | i3 | — | 0.6L | L2 | ELECTRIC/GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | M2 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | M3 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2017 | BMW | M4 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2017 | BMW | X4 | M40i | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | X5 | — | 3.0L | L6 | GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2017 | BMW | X6 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 335i GT xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 435i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 435i Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 435i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 435i xDrive Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 535i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 535i GT | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 535i GT xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 535i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 640i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 640i Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 640i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | 640i xDrive Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | ActiveHybrid 5 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | i3 | — | 0.6L | L2 | ELECTRIC/GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | M2 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | M235i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | M235i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | M3 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2016 | BMW | M4 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2016 | BMW | X4 | M40i | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | X5 | — | 3.0L | L6 | GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2016 | BMW | X6 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 335i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 335i GT xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 335i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 435i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 435i Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 435i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 435i xDrive Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 535i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 535i GT | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 535i GT xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 535i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 640i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 640i Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 640i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | 640i xDrive Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | ActiveHybrid 3 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | ActiveHybrid 5 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | i3 | — | 0.6L | L2 | ELECTRIC/GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | M235i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | M235i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | M3 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2015 | BMW | M4 | — | 3.0L | L6 | — | Downstream | Cyls. 4-6; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2015 | BMW | X5 | — | 3.0L | L6 | GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2015 | BMW | X6 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 335i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 335i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 435i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 435i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 535i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 535i GT | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 535i GT xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 535i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 640i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 640i Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 640i xDrive | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | 640i xDrive Gran Coupe | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | ActiveHybrid 3 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | ActiveHybrid 5 | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | i3 | — | 0.6L | L2 | ELECTRIC/GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | M235i | — | 3.0L | L6 | — | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2014 | BMW | X5 | — | 3.0L | L6 | GAS | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| No rows match your filter. | ||||||||
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
117876458751178784848711788603903