Feuling 9904 12mm O2 Sensor - Rear

***Please note, this item will take an additional 2 business days to process before it ships and you receive tracking information.***

Precision manufactured with a ceramic body made of stabilized zirconium dioxide, surface coated with gas-permeable platinum electrodes and a porous ceramic to help prevent erosion due to contamination and particulates in the exhaust gases.
Slow reading oxygen sensors can cause a drop in fuel economy of 10-15%, excessive exhaust emissions and poor drivability.
Life expectancy of an average oxygen sensor in a properly tuned engine is typically 30,000-50,000 miles.
Narrow band O2 sensors available in 12.5in., 16.25in. and 22.25in. overall lengths.
Replacement Wide Band O2 sensor for aftermarket ignition tuners also available; overall length is 30.25in..
All sensors meet or exceed OE specifications.
Made in the USA.

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