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NTK 25545 Oxygen Sensor - Downstream or Upstream
| Brand | NTK 25545 |
|---|---|
| Position | Upstream and Downstream |
| Wiring Harness Length | 24.5000 |
| 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 | Mercedes-Benz · 2 vehicles |
Direct-fit design. Application-specific replacement with OE-style fit, form, and function.
Heated sensor. Helps the sensor reach operating temperature quickly for responsive exhaust feedback.
OE-tested quality. Manufactured and tested to meet or exceed original equipment specifications.
Cross-references Bosch 13597, Bosch 13599 and Delphi ES10574 for the same application. See all 14.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Direct-fit oxygen sensor for Mercedes-Benz E320
NTK Direct Fit Oxygen Sensor 25545 is a specific-fit heated oxygen sensor built for 1996 Mercedes-Benz E320 applications. It uses a threaded mounting design and a 4-wire configuration to match the original sensor layout for upstream and downstream positions.
Key features
- Heated oxygen sensor for faster operating response.
- Specific-fit design for direct replacement use.
- Threaded mounting type with 18 mm thread diameter.
- 24.5-inch wiring harness length for proper routing.
- 4-wire sensor configuration.
Detailed description
NTK 25545 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific replacement sensors with OE-style fit, form, and function. For the Mercedes-Benz E320, this sensor is listed for both upstream and downstream locations in 1996 models, including Bank 1 Sensor 1 air/fuel ratio service and downstream exhaust monitoring. NTK applies its oxygen-sensor manufacturing expertise and ceramic technology to deliver a replacement that aligns with original equipment requirements. This part cross-references Bosch 13597 and 13599 for the same application.
What it is used for
- Replacing a worn or slow-responding oxygen sensor.
- Restoring accurate exhaust oxygen feedback to the engine control system.
- Addressing check engine light concerns related to sensor performance.
- Correcting fuel trim issues caused by inaccurate air/fuel ratio readings.
- Replacing a damaged threaded sensor or harness connection.
Installation notes and tips
Verify the sensor position, connector style, thread diameter, and harness length before installation. This NTK oxygen sensor is a direct-fit, threaded replacement for the listed Mercedes-Benz E320 applications, so matching the original mounting location and wiring layout is important for proper installation.
Quality assurance
NTK states that its oxygen sensors are extensively tested during manufacturing and are built to meet or exceed OE specifications. The brand is part of NGK and is recognized as a major original equipment oxygen sensor supplier.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1996 | Mercedes-Benz | E320 | 3.2L | L6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1996 | Mercedes-Benz | E320 | 3.2L | L6 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
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