Walker Upstream Left Oxygen Sensor for 2006-2009 GMC Envoy XL 5.3L V8 O2 bw

Walker Upstream Right Oxygen Sensor for 2006-2009 GMC Envoy XL 5.3L V8 O2 li

NGK NTK Downstream Left O2 Oxygen Sensor for 2003-2005 GMC Envoy XL 5.3L V8 ts

NGK NTK Downstream Left O2 Oxygen Sensor for 2005 GMC Envoy 5.3L V8 - zz

NGK NTK Downstream Left O2 Oxygen Sensor for 2004-2005 GMC Envoy XUV 5.3L V8 qn

NGK NTK Upstream Right O2 Oxygen Sensor for 2006-2009 GMC Envoy 5.3L V8 - ut

NGK NTK Upstream Left O2 Oxygen Sensor for 2006-2009 GMC Envoy 5.3L V8 - dx

NGK NTK Downstream Left O2 Oxygen Sensor for 2006 GMC Envoy 5.3L V8 - rm