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Denso 234-5047 Air / Fuel Ratio Sensor - Upstream
| Brand | Denso 234-5047 |
|---|---|
| Position | Upstream |
| Connector Gender | Male |
| Grade Type | Regular |
| Sensor Type | Heated |
| Thread Diameter | 0.711 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 5 |
| Wiring Harness Length | 21.73 |
| Product line | OE Style |
| Fits | Hyundai · 2 vehicles |
OE style. Precision-built for exact replacement and a first-time fit.
Heated sensor. Delivers fast, reliable air-fuel ratio monitoring.
Specific fit. Made for straightforward installation with the right part.
Cross-references Bosch 18052, Hyundai 3921023910 and NTK 24362 for the same application. See all 5.
Denso OE Style Air/Fuel Ratio Sensor 234-5047
Denso 234-5047 is an OE Style heated air/fuel ratio sensor built for precise replacement and first-time fit. It is a specific-fit sensor for the upstream position on select Hyundai Elantra models, with the connector, harness length, and thread dimensions matched for direct service replacement.
Key Features
- OE Style replacement air/fuel ratio sensor for emission control service
- Heated sensor design for faster operating temperature and stable signal response
- Specific fit application for accurate installation on the listed vehicle
- 5-wire configuration with male connector
- Wiring harness length: 21.73 in.
- Thread diameter: 0.711 in.
- Direct-fit replacement for upstream service on 2009-2010 Hyundai Elantra
Product Details
This Denso air/fuel ratio sensor is manufactured and tested to OE standards for consistent performance in the emissions system. The OE Style line focuses on exact replacement geometry and electrical fitment, helping reduce guesswork during service. Part number 234-5047 is a direct replacement for the upstream sensor location on 2009-2010 Hyundai Elantra models, and it cross-references Bosch 18052 for the same application.
Compatible With 2009-2010 Hyundai Elantra, upstream. The sensor is designed for vehicles that require a heated, specific-fit air/fuel ratio sensor with a 5-wire layout and male connector. Denso 234-5047 is also referenced by Hyundai 3921023910, NTK 24362, and Walker Products 250-25017 / 350-35031.
Common Issues This Sensor Can Address
- Check engine light related to air/fuel ratio sensor performance
- Incorrect fuel trim readings from a worn upstream sensor
- Slow sensor response during closed-loop operation
- Emissions test failures tied to sensor signal degradation
- Rough idle or drivability concerns caused by inaccurate exhaust feedback
Installation Notes and Tips
Verify the upstream sensor location before ordering and compare the connector style, wire count, and thread diameter to the original part. Because this is a specific-fit sensor, it should be matched to the listed Hyundai Elantra application and installed using the correct service procedure for the exhaust system. Confirm the harness routing and connector orientation during installation to avoid strain on the wiring.
Quality Assurance
Denso manufactures this OE Style sensor to strict original-equipment standards and tests each component for replacement accuracy and fit. The goal of the OE Style line is to provide the correct part for the application the first time, with dimensions and electrical characteristics aligned to the listed vehicle.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2010 | Hyundai | Elantra | Upstream | OE Style |
| 2009 | Hyundai | Elantra | Upstream | OE Style |
| No rows match your filter. | ||||