Shop 1999 Buick Century Oxygen Sensor (Rear, Upper). 4.3, 5.3, 6.2 LITER, 4.3 liter. Silverado, Sierra LITER, Make, EMISSION - OEM Buick Part # 12702181 (12688831, 12697487)

Sensor. Oxygen. Ft. Snsr.
Oxygen Sensor.

Oxygen Sensor

Fits Sierra 1500, Silverado

4.3, 5.3, 6.2 LITER, 4.3 liter. Silverado, Sierra; 4.3L; Upstream; Right.
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.