Shop 2004 Buick Century Oxygen Sensor (Rear, Lower). 3.8 liter. 3.8L. All Models. All Models; 3.8L. All Models, Emission, Gas - OEM Buick Part # 19178938 (25312185, AFS76)

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

Oxygen Sensor

3.8 liter. 3.8L. All Models. All Models; 3.8L. All Models; 3.8L; To Converter. All Models; 4.3L. All Models; 5.0L, 5.7L; All. All Models; 7.4L. All Models; w/Gas; 3 Wire. Astro, Safari; 4.3L. Front of converter. GAS ENGINES. Heated (3 wire). W/O DIESEL.
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.