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Denso 234-4434 Oxygen Sensor - Downstream, Downstream Left or Upstream Left
| Brand | Denso 234-4434 |
|---|---|
| Position | Downstream |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 23.62 |
| Product line | OE Style |
| Fits | Hyundai and Kia · 33 vehicles |
OE style replacement. Precision-built for exact replacement and first-time fit.
Heated sensor. Helps maintain accurate emissions control performance.
Threaded mounting. Installs with a secure, direct-fit connection.
Cross-references ACDelco 213-2896, ACDelco 213-3017 and ACDelco 213-3110 for the same application. See all 32.
Denso OE Style Oxygen Sensor 234-4434
Denso 234-4434 is an OE Style heated oxygen sensor built for specific-fit replacement on select Hyundai and Kia applications. It is engineered for accurate exhaust feedback, stable engine management, and a first-time fit on vehicles such as the Hyundai Sonata, Santa Fe, and Kia Optima.
Key Features
- OE Style, specific-fit oxygen sensor for direct replacement
- Heated sensor design for faster operating temperature and signal response
- 4-wire configuration with male connector
- Threaded mounting type with 0.708 in. thread diameter
- 23.62 in. wiring harness length for application-specific routing
- Built to OE standards with Denso’s aluminum oxide trap layer for added protection against silicone and lead contamination
Product Details
Denso 234-4434 is part of Denso’s OE Style line, which focuses on exact replacement fitment and factory-style performance. The sensor is precision built for the listed applications and tested to OE-level standards, helping maintain proper air-fuel feedback in the exhaust system. This part cross-references Bosch 13751 and NTK 25150 for the same application. It is a direct replacement choice for drivers servicing a Hyundai Sonata downstream oxygen sensor, a Kia Optima downstream oxygen sensor, or a Hyundai Santa Fe downstream oxygen sensor.
What This Oxygen Sensor Helps Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel mixture readings from a worn downstream sensor
- Reduced fuel economy caused by inaccurate exhaust feedback
- Rough idle or drivability issues tied to sensor degradation
- Emissions test failures linked to faulty oxygen sensor output
Installation Notes and Fitment
Compatible With 1999-2005 Hyundai Sonata, downstream, with close coupled catalyst in manifold; 2001-2006 Hyundai Santa Fe, downstream; 2001-2006 Kia Magentis, downstream; 2001-2006 Kia Optima, downstream; 2002-2005 Kia Sedona, downstream; 2001 Hyundai XG300, upstream left; 2001 Hyundai XG300, downstream left; 2002-2003 Hyundai XG350, downstream left. Verify connector style, thread size, and sensor position before installation. Use the vehicle’s exact engine and exhaust configuration to confirm the correct downstream or upstream location.
Quality Assurance
Denso manufactures and tests this oxygen sensor to strict OE standards for consistent fit and function. The design includes an aluminum oxide trap layer to help protect the sensing element from contamination, supporting long-term sensor performance in demanding exhaust conditions.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2006 | Hyundai | Santa Fe | Downstream | OE Style |
| 2006 | Kia | Magentis | Downstream | OE Style |
| 2006 | Kia | Optima | Downstream | OE Style |
| 2005 | Hyundai | Santa Fe | Downstream | OE Style |
| 2005 | Hyundai | Sonata | Downstream | w/ Close Coupled Catalyst (in Manifold); OE Style |
| 2005 | Kia | Magentis | Downstream | OE Style |
| 2005 | Kia | Optima | Downstream | OE Style |
| 2005 | Kia | Sedona | Downstream | OE Style |
| 2004 | Hyundai | Santa Fe | Downstream | OE Style |
| 2004 | Hyundai | Sonata | Downstream | w/ Close Coupled Catalyst (in Manifold); OE Style |
| 2004 | Kia | Magentis | Downstream | OE Style |
| 2004 | Kia | Optima | Downstream | OE Style |
| 2004 | Kia | Sedona | Downstream | OE Style |
| 2003 | Hyundai | Santa Fe | Downstream | OE Style |
| 2003 | Hyundai | Sonata | Downstream | w/ Close Coupled Catalyst (in Manifold); OE Style |
| 2003 | Hyundai | XG350 | Downstream Left | To 02/03; OE Style |
| 2003 | Kia | Magentis | Downstream | OE Style |
| 2003 | Kia | Optima | Downstream | OE Style |
| 2003 | Kia | Sedona | Downstream | OE Style |
| 2002 | Hyundai | Santa Fe | Downstream | OE Style |
| 2002 | Hyundai | Sonata | Downstream | w/ Close Coupled Catalyst (in Manifold); OE Style |
| 2002 | Hyundai | XG350 | Downstream Left | OE Style |
| 2002 | Kia | Magentis | Downstream | OE Style |
| 2002 | Kia | Optima | Downstream | OE Style |
| 2002 | Kia | Sedona | Downstream | OE Style |
| 2001 | Hyundai | Santa Fe | Downstream | OE Style |
| 2001 | Hyundai | Sonata | Downstream | w/ Close Coupled Catalyst (in Manifold); OE Style |
| 2001 | Hyundai | XG300 | Upstream Left | OE Style |
| 2001 | Hyundai | XG300 | Downstream Left | OE Style |
| 2001 | Kia | Magentis | Downstream | OE Style |
| 2001 | Kia | Optima | Downstream | OE Style |
| 2000 | Hyundai | Sonata | Downstream | w/ Close Coupled Catalyst (in Manifold); OE Style |
| 1999 | Hyundai | Sonata | Downstream | w/ Close Coupled Catalyst (in Manifold); OE Style |
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