NTK Oxygen Sensor P/N:21040
NTK 25182 O2 sensor for the 2006-2008 Hyundai Sonata 4-cylinder 2.4L and other vehicles sends closed-loop feedback on exhaust oxygen to the ECU. The NTK O2 sensor is a heated, switching zirconia type, and that feedback helps control the air-fuel ratio.
The sensor also alerts the OBDII system to possible fuel delivery or catalytic converter problems. A check engine light, rougher running or lower fuel economy can be signs of a worn sensor, though these signs alone do not prove it is the cause; an exhaust leak near the sensor can read the same way. This listing is one sensor, and the cars named here take one.
This direct-fit O2 sensor also replaces the sensor on the 2006-2008 Kia Optima 4-cylinder 2.4L and the 2006-2008 Kia Magentis 4-cylinder 2.4L. Is your car not named here? Look it up in the "Vehicles it fits" section before you order.
Fit and size
Build and materials
Is this the Hyundai Sonata oxygen sensor replacement for 2006-2008 cars with the 4-cylinder 2.4L?
Yes. NTK 25182 fits the 2006-2008 Hyundai Sonata 4-cylinder 2.4L. The 2006-2008 Kia Optima 4-cylinder 2.4L takes the same sensor.
Is the NTK 25182 a heated sensor?
Yes. NTK 25182 is a heated, switching zirconia type O2 sensor with a 7/8 in (22 mm) hex.
What testing does this O2 sensor go through?
Development includes vibration and thermal shock testing, and testing during manufacturing checks quality and reliability.
What can a failing O2 sensor look like?
A check engine light, rougher running or lower fuel economy can be signs. The OBDII system can also store codes tied to fuel delivery or catalytic converter efficiency.
Does this O2 sensor have a protective overcoat on the ceramic element?
Yes. NTK 25182 has a 3-stage contaminant-resistant plasma jet and deposit trap overcoat that protects the ceramic element against poisoning.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.