NGK NTK Upstream Left O2 Oxygen Sensor for 1999-2000 GMC Sierra 2500 5.3L V8 lk

NGK NTK Upstream Right O2 Oxygen Sensor for 2008-2010 Hummer H3 5.3L V8 - dr

NGK NTK Upstream Left O2 Oxygen Sensor for 2003-2013 Chevrolet Silverado rx

NGK NTK Upstream Left O2 Oxygen Sensor for 2005 Buick Rainier 5.3L V8 - gn

NGK NTK Upstream Left O2 Oxygen Sensor for 2005 GMC Envoy XUV 5.3L V8 - vv

NGK NTK Upstream Left O2 Oxygen Sensor for 2005 Isuzu Ascender 5.3L V8 - zr

NGK NTK Downstream Left O2 Oxygen Sensor for 2009-2010 Hummer H3T 5.3L V8 - kj

NGK NTK Upstream Left O2 Oxygen Sensor for 2006 Isuzu Ascender 5.3L V8 - gr