Infiniti QX56 Oxygen Sensor Upstream Front 2349038
The Infiniti QX56 Oxygen Sensor Upstream Front (part number 234-9038) is a direct-fit replacement designed to keep your engine running clean, efficiently, and reliably. This upstream O2 sensor measures the air–fuel ratio before the catalytic converter, sending real-time data to your engine control unit to optimize combustion, reduce emissions, and protect your exhaust system. With a heating element for rapid warm-up, it provides accurate readings from cold starts, helping your engine reach peak efficiency faster.
Engineered for a precise match to the OEM specifications, this sensor is compatible with a broad range of Infiniti and Nissan models from the late 2000s. It’s a 100% brand-new part that has been thoroughly tested before shipment to ensure dependable performance on installation. The part numbers and applications align with the upstream front sensor needs for key vehicles, including Infiniti QX56 and several Nissan pickups and SUVs.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Trust and reliability are built into every purchase at InterCyprus. At intercyprus.com since 2002 — trusted for quality and reliability.
Benefits & Tips
- Restore proper air–fuel ratio to improve idle stability, throttle response, and overall engine performance.
- Reduce exhaust emissions and help protect the catalytic converter by ensuring accurate O2 readings during cold starts and normal driving.
- Tip: Verify fitment against the listed vehicles (Infiniti QX56 and the corresponding Nissan models) before installation to ensure a seamless replacement.
Product specifications
- Sensor Type: Piezoelectric
- Heating Type: Heating element for fast warm-up
- Measuring Range: Upstream Front Air Fuel Ratio Lambda O2
- OEM No.: 234-9038
- Part Numbers (aliases): 234-9038, 22693-1AA0A, 226931AA0A, 1821382Z00, 25679, 15380, 754246, 211200-7070, 18213-82Z00, 250-54037, SU11558, C5015376634ND
- Origin: Mainland China
- Brand: NONE
- Applicable Models/Axes: For 2008-2010 Infiniti QX56; For 2008-2013 Nissan Armada 5.6L; For 2008-2012 Nissan Frontier 2.5L; For 2008-2012 Nissan Pathfinder 4.0L; For 2008-2012 Nissan Titan 5.6L; For 2008-2011 Nissan Altima 3.5L; For 2008-2010 Nissan Xterra 4.0L; For 2010 Nissan Rogue; For 2009 Nissan Maxima 3.5L; For 2009-2012 Suzuki Equator 2.5L
Package includes:
- 1 x Oxygen Sensor
Warnings / Reminders
- Please check fitment and product images to confirm compatibility before ordering.
- We offer a 1-year replacement warranty; items must be returned in original packaging if a malfunction is claimed.
- Shipping times are estimates and may vary with season and weather; ensure shipping address is correct at checkout.
Warranty: 1 year | Warranty Type: Replacement Warranty
Language support: If available in your region, please refer to product support for language options.