Photo 1 of 2003-2005 O2 Oxygen Sensor Upstream Compatible for Chevrolet Silverado 1500 2500 3500 5.3L 2003-2005, for GMC Sierra 1500/Yukon 5.3L 2003-2013, Buick 2005-2011, Pontiac 2004-2010, Replaces 234-4668

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Photo 1 of 2003-2005 O2 Oxygen Sensor Upstream Compatible for Chevrolet Silverado 1500 2500 3500 5.3L 2003-2005, for GMC Sierra 1500/Yukon 5.3L 2003-2013, Buick 2005-2011, Pontiac 2004-2010, Replaces 234-4668Photo 2 of 2003-2005 O2 Oxygen Sensor Upstream Compatible for Chevrolet Silverado 1500 2500 3500 5.3L 2003-2005, for GMC Sierra 1500/Yukon 5.3L 2003-2013, Buick 2005-2011, Pontiac 2004-2010, Replaces 234-4668