Shop 1997 Buick Century Oxygen Sensor (Upper, Lower). CANISTER & SENSORS, 2.7 liter. CT4; 2.7L; Upstream Emission, Liter, Make - OEM Buick Part # 12704309

Oxygen. Sensor. Snsr. Ft.
Oxygen Sensor.

Oxygen Sensor

Fits CT4

CANISTER & SENSORS, 2.7 liter. CT4; 2.7L; Upstream.
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.