Buy 2003 Buick Century Oxygen Sensor (Rear, Lower). 3.1 LITER, 2000-01. 3.4 LITER, 2000-01, post Converter, Post, LITER - OEM Buick Part # 19178747 (25318321)

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

Oxygen Sensor

Fits Century, Impala, Intrigue, Lumina, Monte Carlo, Regal, Riviera

3.1 LITER, 2000-01. 3.4 LITER, 2000-01, post converter. 3.4 LITER, 2002-05, post converter. 3.4 LITER, rear. 3.5 LITER, post converter. 3.8 LITER, post converter. All Models; 3.1L & 3.4L; Chevrolet; To Converter. All Models; 3.1L; Rear. All Models; 3.5L; Rear. All Models; 3.8L; Rear. All Models; 3.8L; Rear; w/Supercharger; Position 3. EGR VALVE & SENSORS, post converter. Impala, Monte Carlo; 3.4L; Rear. Impala, Monte Carlo; 3.8L; Rear. Post converter.
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 2003 Buick Century to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and Buick genuine parts.