4PCS Upstream & Downstream Oxygen O2 Sensors For Chevy Tahoe GMC Sierra Yukon

Package included

2X Upstream + 2X Downstream O2 Oxygen Sensor（15% increase in performance and energy）

Feature

High Performance

Corrosion-resistant stainless steel construction

PTFE filter blocks efficiency-robbing contaminants

Refined zirconia element improves sensor response

Superior design maximizes engine performance and fuel

efficiency while reducing fuel consumption and harmful emissions

Ensures smog test compliance

Ready to use, Direct Replacement

Built to strict quality control standards

100% Factory tested

Part Number/OEM Number

234-4407, 234-4668