NTK 24395 air / fuel ratio sensor for the 2010-2013 Mazda 3 4-cylinder 2.5L and other vehicles tells the ECU how rich or lean the engine is running.
A check engine light, rough idle or poor fuel economy can mean the sensor is worn, though a dirty mass airflow sensor or worn spark plugs can be behind them too, so find the actual cause before replacing it.
This is a direct-fit replacement for the 2010-2013 Mazda 3 4-cylinder 2.5L and the 2010-2013 Mazda 3 Sport 4-cylinder 2.5L. This listing is one upstream sensor, and either car takes a single one.
Fit and size
Build and materials
One air / fuel ratio sensor with its water-resistant connector and harness accessory hardware.
Interchange: 234-5041 · 234-5078
18067 · L540188G1 · L5D8188G1
This part cross-references / interchanges with the following part numbers:
Is this the air fuel ratio sensor for the 2010-2013 Mazda 3 4-cylinder 2.5L?
Yes. NTK 24395 is an upstream sensor that fits the 2010-2013 Mazda 3 4-cylinder 2.5L and the 2010-2013 Mazda 3 Sport 4-cylinder 2.5L, one per car.
How is the NTK air fuel ratio sensor different from a regular oxygen sensor?
NTK 24395 is a 5-wire wideband sensor. Its linear output lets the ECU see exactly how rich or lean the engine runs, while a conventional switching sensor only reads rich or lean.
Which connector comes with this 5-wire air / fuel ratio sensor?
The sensor comes with a water-resistant connector and harness accessory hardware.
What hex size and thread does this wideband air / fuel ratio sensor have?
This sensor has a 7/8 in (22 mm) hex and an M18 - 1.5 thread. It is a heated sensor.
Is 234-5041 a cross-reference for this NTK air / fuel ratio sensor?
Yes. 234-5041 is one of the numbers NTK 24395 replaces. The Interchange line on this page lists the others.
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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.
