NGK O2 SENSORS 22129 ntk for the 2009-2013 Mazda 6 4-cylinder 2.5L gives the ECU closed-loop feedback to help control the air-fuel ratio. It also lets the OBDII system flag possible fuel delivery or catalytic converter efficiency problems.
A worn oxygen sensor can show up as a check engine light or a drop in fuel economy. A fuel injector problem or a weak catalytic converter can also set off that light, so find the cause before you replace the sensor.
This oxygen sensor fits the 2009-2013 Mazda 6 4-cylinder 2.5L (L4-2.5L), and that engine takes one.
Fit and size
Build and materials
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Is the NGK 22129 oxygen sensor right for the 2009-2013 Mazda 6 4-cylinder 2.5L?
Yes. NGK O2 SENSORS 22129 is listed for the 2009-2013 Mazda 6 4-cylinder 2.5L (L4-2.5L), and that engine takes one sensor.
What thread and hex size does the NGK 22129 oxygen sensor have?
NGK O2 SENSORS 22129 has an M18 - 1.5 thread and a 7/8" (22 mm) hex.
Is this oxygen sensor heated, and is it a zirconia type?
Yes. This is a heated, switching zirconia sensor with a narrow-band design.
How can I tell if an oxygen sensor is wearing out?
A check engine light or a drop in fuel economy can be a sign. A shop can read the codes and test the sensor with the engine running.
How is the ceramic element in this NGK oxygen sensor protected from contamination?
A 3-stage contaminant-resistant plasma jet and deposit trap overcoat 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.