Shop 1990 Buick Century Oxygen Sensor. Before catalyst. Before catalyst, 3.5 liter. Pacifica; Front; 3 Before, Catalyst - OEM Buick Part # 4727446AD (04727446AC, 04727446AD, 4727446AC)

Ft Oxygen Sensor.
Oxygen Sensor.

Oxygen Sensor

Fits Pacifica

Before catalyst. Before catalyst, 3.5 liter. Pacifica; Front; 3.5L.
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.