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NTK 25176 Oxygen Sensor - Upstream
| Brand | NTK 25176 |
|---|---|
| Position | Upstream |
| Wiring Harness Length | 9.2500 |
| 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. Specific-fit replacement for streamlined oxygen sensor service.
Heated sensor. Reaches operating temperature efficiently for responsive exhaust feedback.
OE-tested quality. Manufactured to meet or exceed original equipment specifications.
Cross-references Bosch 15647, Delphi ES10856 and DENSO Auto Parts 234-4190 for the same application. See all 6.
Direct-Fit Oxygen Sensor
The NTK 25176 is a specific-fit heated oxygen sensor built for emission control applications that require accurate exhaust feedback and OE-style fitment. It is engineered for the upstream location on select Kia Rio models and uses a threaded mounting design for a direct replacement approach.
Key Features
- Heated oxygen sensor design for faster operating response.
- Specific-fit application for straightforward replacement.
- 4-wire configuration with a 9.2500-inch wiring harness length.
- 18.000 thread diameter and threaded mounting type.
- NTK 25176 direct-fit sensor for emission control service.
Detailed Description
NTK 25176 is part of the Direct Fit Oxygen Sensor line, built to match the original sensor style used in select Kia Rio applications. As an upstream oxygen sensor, it monitors exhaust conditions before the catalytic converter so the engine control system can adjust fuel delivery based on real-time data. The heated design helps the sensor reach operating temperature efficiently, while the specific-fit construction supports clean replacement without adapting the harness or mounting style. This NTK oxygen sensor is a practical choice for restoring proper feedback in 2004-2005 Kia Rio emission control service, and the 25176 part number is useful when verifying the correct application.
What It Helps Address
- Check engine lights related to oxygen sensor performance.
- Incorrect air-fuel mixture feedback from a worn sensor.
- Slow sensor response during cold operation.
- Emission control faults tied to upstream exhaust monitoring.
Installation Notes and Tips
Fits 2004-2005 Kia Rio, upstream. Confirm the threaded mounting style, 4-wire layout, and harness length before installation. Verify the connector routing and sensor location against the original unit to ensure the NTK 25176 matches the vehicle configuration.
Quality Assurance
NTK is part of the NGK family of products and is recognized as a major original equipment oxygen sensor supplier. The 25176 is extensively tested during manufacturing to meet or exceed OE specifications for fit, form, and function.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Kia | Rio | 1.6L | L4 | Upstream | Bank 1 Sensor 1 Oxygen Sensor; Direct Fit Oxygen Sensor |
| 2004 | Kia | Rio | 1.6L | L4 | Upstream | Bank 1 Sensor 1 Oxygen Sensor; Direct Fit Oxygen Sensor |
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