Denso 234-4449 Oxygen Sensor - Upstream
OE Quality 60-Day Returns
Denso
 OE Style

Denso 234-4449 Oxygen Sensor - Upstream

Brand Denso 234-4449
Position Upstream
Connector Gender Male
Mounting Type Threaded
Sensor Type Heated
Thread Diameter 0.708
Universal Or Specific Fit Specific
Wire Quantity 4
Wiring Harness Length 18.90
Product line OE Style
Fits Hyundai · 3 vehicles

OE style replacement. Precision-built for exact replacement and a first-time fit.

Heated sensor. Helps support quicker operation and consistent performance.

Aluminum oxide trap layer. Protects the ceramic element for improved longevity.

Cross-references Bosch 18049, Hyundai 392102C200 and NTK 25210 for the same application. See all 5.

$89.64Free shipping
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Denso OE Style Oxygen Sensor for Hyundai Genesis Coupe

Restore accurate exhaust feedback with this Denso OE Style heated oxygen sensor, part number 234-4449. It is built as a specific-fit replacement for the upstream position on 2010-2012 Hyundai Genesis Coupe models, with the correct 4-wire configuration and threaded mounting for a direct replacement path.

Key Features

  • OE Style replacement oxygen sensor from Denso
  • Specific fit for the upstream location
  • Heated sensor design for faster operating response
  • 4-wire layout with male connector
  • 18.90-inch wiring harness length
  • Threaded mounting with 0.708-inch thread diameter
  • Built to OE standards for exact replacement fit

Product Details

Denso 234-4449 is engineered for 2010-2012 Hyundai Genesis Coupe upstream applications and follows the OE-style format expected in factory replacement service. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management performance and fuel economy over time. If you are replacing a worn upstream oxygen sensor on a Hyundai Genesis Coupe, this part number 234-4449 provides the correct fitment and connector style for the listed application.

This part cross-references Hyundai 392102C200 for the same application.

What This Sensor Helps Address

  • Check engine light caused by an aging upstream oxygen sensor
  • Incorrect air-fuel ratio feedback to the engine control system
  • Reduced fuel economy from slow or inaccurate sensor response
  • Rough idle or drivability issues tied to exhaust sensor signal loss
  • Emission test failures related to sensor performance

Installation Notes and Tips

Verify the upstream sensor location before installation and confirm the connector, wire count, and threaded mounting match the original unit. Inspect the harness routing and exhaust threads before fitting the new sensor. For 2010-2012 Hyundai Genesis Coupe service, part number 234-4449 is a direct replacement for the specified OE-style application.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for precise replacement fit and consistent operation. The OE Style line is designed to match factory requirements for the listed Hyundai Genesis Coupe applications.

Related reading

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2012HyundaiGenesis CoupeUpstreamOE Style
2011HyundaiGenesis CoupeUpstreamOE Style
2010HyundaiGenesis CoupeUpstreamOE Style
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 18049Hyundai — 392102C200NTK — 25210Walker Products — 250-24916Walker Products — 350-34161