Upstream and Downstream Heated O2 Oxygen Sensor Compatible with Buick

234-4337 Oxygen O2 Sensor Upstream or Downstream Compatible with Buick

Oxygen Sensor Upstream&Downstream O2 Sensor Compatible with 234-4528 & 234-4529

O2 Sensor Oxygen Sensor Upstream Downstream Compatible with 234-4673 for Buick

234-4668 Oxygen Sensor Upstream or Downstream O2 Sensor Compatible with Buick

Upstream and Downstream Heated O2 Oxygen Sensor Compatible with Buick

234-4815 Oxygen O2 Sensor Upstream Downstream Compatible with 2005-2011