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NTK 25734 Oxygen Sensor - Downstream
| Brand | NTK 25734 |
|---|---|
| Position | Downstream |
| Wiring Harness Length | 42.2500 |
| 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 | Kia · 2 vehicles |
Direct fit design. Built for specific application matching and straightforward replacement service.
Heated sensor. Supports emissions system feedback with a 4-wire configuration.
OE-focused engineering. NTK applies ceramic sensor expertise and manufacturing control.
Cross-references DENSO Auto Parts 234-4549 and 392102B050 for the same application. See all 2.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Direct Fit Oxygen Sensor
NTK Oxygen Sensor 25734 is a specific-fit, heated oxygen sensor built for direct replacement service. It is engineered for threaded mounting and uses a 4-wire design with a 42.2500 wiring harness length.
Compatible with 2010-2011 Kia Soul downstream oxygen sensor applications, this NTK sensor supports accurate exhaust feedback in the emissions control system. The direct-fit design helps reduce installation complexity while maintaining OE-style fit, form, and function.
Key Features
- Heated oxygen sensor design for emissions system service
- Specific-fit replacement for direct application matching
- Threaded mounting type for secure installation
- 4-wire configuration for the listed application
- 42.2500 wiring harness length
- NTK part number 25734
Detailed Description
NTK 25734 is part of the Direct Fit Oxygen Sensor line, a product line focused on application-specific replacement sensors. Built under the NGK family of products, NTK combines ceramic sensor expertise with manufacturing controls that support consistent fit and function. For 2010-2011 Kia Soul downstream service, this oxygen sensor is designed to match the original equipment style used in the vehicle's emissions control system.
This part cross-references DENSO Auto Parts 234-4549 for the same application. The NTK 25734 oxygen sensor is a practical choice for technicians and owners looking for a direct-fit replacement for Kia Soul downstream oxygen sensor service.
What It Is Used For
- Replacing a failed downstream oxygen sensor
- Restoring exhaust gas feedback to the engine management system
- Addressing check engine light concerns related to oxygen sensor performance
- Correcting drivability issues tied to inaccurate air-fuel monitoring
- Servicing emissions control faults on the listed application
Installation Notes and Tips
Verify connector style, thread size, and harness routing before installation. This sensor uses a threaded mounting type and a 4-wire configuration, so matching the original application details is important for proper installation. Confirm downstream placement on the vehicle before replacing the part.
Quality Assurance
NTK states that its oxygen sensors are extensively tested during manufacturing and built to meet or exceed OE specifications. The brand also emphasizes OE application coverage and original equipment-level fit, form, and function.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Kia | Soul | 1.6L | L4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2010 | Kia | Soul | 1.6L | L4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
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