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Delphi ES20397 Oxygen Sensor - Front Right
| Brand | Delphi ES20397 |
|---|---|
| Position | Front Right |
| Connector Shape | Flat |
| Overall Length | 395.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Sensor Type | Heated |
| Thread Size | 18 x 1.5 mm |
| Wire Quantity | 4 |
| Fits | Hyundai · 9 vehicles |
Heated sensor. Provides faster operation for responsive emissions monitoring.
Flat connector. Simplifies hookup with a compact, low-profile design.
OE heritage. Built from decades of original-equipment experience.
Cross-references DENSO Auto Parts 234-4903, NTK 25678 and Walker Products 250-24739 for the same application. See all 6.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
OE-Style Oxygen Sensor for Hyundai Front Right
Delphi ES20397 is a heated oxygen sensor built for front right placement on select Hyundai applications. It combines OE heritage with the fit and signal characteristics needed for accurate exhaust monitoring on the 2007-2012 Hyundai Veracruz and 2007-2009 Hyundai Santa Fe.
Key Features
- Heated oxygen sensor for faster operating temperature
- 4-wire design for signal and heater circuit operation
- Flat connector shape for application-specific fitment
- 18 x 1.5 mm thread size
- Overall length: 395.0
- Includes oxygen sensor and instruction sheet
- Front right position
Detailed Description
Delphi ES20397 is an emission control sensor engineered for direct replacement use on the front right side of the exhaust system. Delphi draws on more than a century of OE experience and supplier knowledge, and that background is reflected in the sensor’s construction and application-specific design. This part cross-references DENSO Auto Parts 234-4903 for the same application.
Compatible With 2007-2012 Hyundai Veracruz, front right, and 2007-2009 Hyundai Santa Fe, front right. If you are replacing a worn sensor on a Hyundai Veracruz or Hyundai Santa Fe, ES20397 provides the correct heated, 4-wire configuration with the specified flat connector and thread size.
Common Issues This Part May Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel ratio readings from a failing front sensor
- Reduced fuel control accuracy during closed-loop operation
- Slow sensor response from an aging heated element
- Emission system fault codes tied to front right sensor output
Installation Notes and Tips
Verify the front right position before installation and confirm thread size, connector shape, and wire count against the original sensor. Inspect the harness routing and exhaust threads for damage or contamination before fitting the new sensor. Clear diagnostic trouble codes after installation and confirm proper operation with a scan tool if available.
Quality Assurance
Delphi builds aftermarket parts using OE heritage and supplier experience developed through work with major automakers. ES20397 is manufactured to match the specified application details for Hyundai Veracruz and Hyundai Santa Fe front right oxygen sensor replacement.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2012 | Hyundai | Veracruz | Front Right | — |
| 2011 | Hyundai | Veracruz | Front Right | — |
| 2010 | Hyundai | Veracruz | Front Right | — |
| 2009 | Hyundai | Santa Fe | Front Right | — |
| 2009 | Hyundai | Veracruz | Front Right | — |
| 2008 | Hyundai | Santa Fe | Front Right | — |
| 2008 | Hyundai | Veracruz | Front Right | — |
| 2007 | Hyundai | Santa Fe | Front Right | — |
| 2007 | Hyundai | Veracruz | Front Right | — |
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