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Downstream Oxygen Sensor For Mazda 3 2010-2013 – Heated 4-Wire (Evan-Fischer)
About this item
This is a direct replacement downstream oxygen sensor for your 2010-2013 Mazda 3.
It's the post-cat (downstream) position.
It's a heated 4-wire sensor, with a 12.8-inch wire length.
It's made by Evan-Fischer and comes with a 1-year unlimited-mileage warranty.
If your check engine light is on for a lazy O2 sensor, this should clear it up.
USD$ 13.25 
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