39210-37543 O2 Lambda Sensor – Direct Fit Replacement

39210-37543 234-4193 Air Fuel Ratio O2 Oxygen Lambda Sensor — High-precision replacement O2 sensor designed to restore accurate air–fuel measurements for Hyundai and Kia 2003–2010 models, improving fuel economy and emissions control.

Features

• Direct-fit replacement for 39210-37543 / 234-4193
• Fast-response zirconia sensing element for accurate lambda readings
• Durable construction for long service life in exhaust environments
• Plug-and-play wiring and OEM-style connector for easy installation

Technical Details

• Compatibility: Hyundai Santa Fe, Sonata, Tiburon, Tucson, Trajet 2.7L V6; Kia Optima (2003–2010)
• Function: Air Fuel Ratio / Lambda / O2 Oxygen Sensor
• Type: Zirconia narrowband sensor, OEM fitment
• OEM Numbers: 39210-37543, 392103
• Measuring Range: Exhaust gas air–fuel ratio
• Included in package: 1 x O2 oxygen lambda sensor, wiring connector (pre-attached)

Warning / Reminder

Ensure vehicle compatibility before installation; handle sensor carefully to avoid contamination of sensing tip and follow torque specs when fitting.

Benefit: This replacement O2 sensor restores accurate air–fuel ratio feedback to the ECU, reducing rough idle, poor fuel economy, and failed emissions tests — delivering smoother performance and lower running costs with straightforward installation and reliable durability.

Perfect for DIY mechanics, repair shops, and owners of Hyundai/Kia models seeking quick emissions fixes and improved fuel efficiency, backed by a satisfaction guarantee.

Order now to replace a faulty oxygen sensor and get your engine running cleanly — ideal for emissions repairs, tune-ups, and routine maintenance.

Used in exhaust monitoring during normal driving and diagnostic repairs; comes ready to install and backed by a parts guarantee (see seller terms).