Oxygen Sensor - 12 mm - Rear - Twin Cam

• 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
• Meet or exceed OE specifications
• Made in the U.S.A
• Life expectancy of an average oxygen sensor in a properly tuned engine is typically 30,000-50,000 miles

Manufacturer Part Number: 9904