Shop Buick Century Oxygen Sensor. 4.2 liter. All Models; 4.2L; Front. Canyon, Colorado; w/o 5.3L; Front EMISSION, LITER, Make - OEM Buick Part # 12573721

Ft Oxygen Sensor. Sensor, Heated Oxygen (O2) (POSN 1).
Oxygen Sensor.

Oxygen Sensor

Fits Bravada, Canyon, Colorado, Envoy, Envoy XL, Envoy XUV, Rainier, Trailblazer, Trailblazer EXT

4.2 liter. All Models; 4.2L; Front. Canyon, Colorado; w/o 5.3L; Front.
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.