Shop 2001 Buick Century Oxygen Sensor (Rear, Lower). 3.5 & 3.7 LITER. Oxygen Sensor - Repair or EMISSION, LITER, Make - OEM Buick Part # 12596740

Sensor. Oxygen.
Oxygen Sensor. Heated (O2) (POSN 2). Ft. Snsr.

Oxygen Sensor

Fits H3

3.5 & 3.7 LITER.
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.