Shop 2005 Buick Century Oxygen Sensor (Rear, Lower). 4.6 liter, catalytic converter. All Models; 4.6L Converter, EMISSION - OEM Buick Part # 12559849

Oxygen. Sensor.
Oxygen Sensor. Assembly - Heated (O2). Ft. Snsr.

Oxygen Sensor

Fits Deville , Eldorado, Seville

4.6 liter, catalytic converter. All Models; 4.6L; Pre & Post Converter. All Models; 4.6L; To Converter. At converter. CALIFORNIA EMISSIONS, at converter. FEDERAL EMISSIONS, at converter. Seville; At Converter.
Oxygen Sensor - Repair or Replace
A failed Oxygen Sensor will often have no noticeable symptoms beyond a check engine light, but it does cause your to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and genuine parts.