• Upstream and downstream O2 sensor kit 234-5029 234-4238
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2-Pc O2 Sensor Kit 234-5029 & 234-4238 for Hyundai Sonata, Santa Fe Sport, Kia Optima, Sorento & Sportage 2.0T 2.4L

2-Pc O2 Sensor Kit 234-5029 & 234-4238 for Hyundai Sonata, Santa Fe Sport, Kia Optima, Sorento & Sportage 2.0T 2.4L

$69.99 USD
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Cross Reference (OE & Cross Brand Part Numbers)

Upstream Sensor (Air Fuel Ratio / A/F Sensor)

  • Interchange Denso PN: 234-5029 / 2345029
  • Factory OEM Part Numbers: 39210-2G100, 39210-2G170, 392102G100, 392102G170
  • Cross-Brand Competitor PNs:
    • Bosch: 18163 / 17218
    • NTK / NGK: 24389
    • Walker Products: 250-54045
Downstream Sensor (Heated Oxygen / O2 Sensor)

  • Interchange Denso PN: 234-4238 / 2344238
  • Factory OEM Part Numbers: 39210-2G200, 39210-2G720, 392102G200, 392102G720
  • Cross-Brand Competitor PNs:
    • Bosch: 15349 / 15354
    • NTK / NGK: 24247
    • Walker Products: 250-241031
🚙 3. Exact Vehicle Fitment / Application List

The applications below are intended for select Hyundai and Kia vehicles with 2.0L turbocharged or 2.4L naturally aspirated gasoline engines. Fitment can vary by model year, trim, emissions specification, connector, and sensor position. Please verify the OE part number and connector before ordering.
Hyundai Models

  • Hyundai Sonata
    • 2011-2014 Hyundai Sonata 2.0L L4 Turbo / 2.4L L4 (Excludes Hybrid Models)
    • 2015-2018 Hyundai Sonata 2.0L L4 Turbo / 2.4L L4 (Excludes Hybrid Models)
  • Hyundai Santa Fe / Santa Fe Sport
    • 2013-2018 Hyundai Santa Fe Sport 2.0L L4 Turbo / 2.4L L4
Kia Models

  • Kia Optima
    • 2011-2015 Kia Optima 2.0L L4 Turbo / 2.4L L4 (Excludes Hybrid Models)
    • 2016-2018 Kia Optima 2.0L L4 Turbo / 2.4L L4 (Excludes Hybrid Models)
  • Kia Sorento
    • 2011-2018 Kia Sorento 2.0L L4 Turbo / 2.4L L4
  • Kia Sportage
    • 2011-2018 Kia Sportage 2.0L L4 Turbo / 2.4L L4
  • 【Complete 2-Pcs Repair Solution】 Package includes 1x upstream air-fuel ratio sensor equivalent to Denso 234-5029 and 1x downstream oxygen sensor equivalent to Denso 234-4238. Replacing worn sensors may help restore accurate fuel-trim feedback and emissions-system monitoring when the existing sensors are faulty.
  • 【OEM Fit & Easy Installation】 Built with factory-style connectors for direct-fit installation on compatible Hyundai and Kia applications. Always verify the part numbers, connector, vehicle year, engine, and sensor position before ordering. This kit does not fit hybrid models.
  • 【Premium Quality & Enhanced Durability】 Features a dual laser-welded stainless steel body and premium ceramic element. Provides superior resistance against high exhaust temperatures, carbon build-up, and fuel contamination for long-lasting performance.
  • 【Important Fitment Note】 Formulated specifically for 2.0T Turbocharged and 2.4L Gas models. DOES NOT FIT HYBRID MODELS. 
Related Diagnostic Trouble Codes
A faulty oxygen sensor may contribute to the following diagnostic trouble codes. These codes can also have other causes, so proper diagnosis is recommended before replacement.
  • Upstream (Sensor 1) Errors: P0031, P0032, P0130, P0131, P0132, P0133, P0135 (Resolves rough idling and engine hesitation)
  • Downstream (Sensor 2) Errors: P0136, P0137, P0138, P0139, P0140, P0141 (Resolves catalytic converter tracking issues)
  • Fuel System Errors: P0171 (System Too Lean), P0172 (System Too Rich)

 

 

 

 

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