Shop 1999 Buick Century Oxygen Sensor (Rear, Lower). 5.3 liter, front of converter. 5.3 liter, rear of Liter, Converter - OEM Buick Part # 12562943

Oxygen. Sensor.
Canada Built. Oxygen Sensor. Assembly - Heated (O2). Ft. Snsr.

Oxygen Sensor

Fits Avalanche 1500, Escalade , Sierra 1500, Sierra 2500, Silverado, Suburban 1500, Tahoe , Yukon, Yukon XL 1500

5.3 liter, front of converter. 5.3 liter, rear of 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 to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and genuine parts.