Photo 1 of A-Premium O2 Oxygen Sensor Upstream and Downstream Compatible with Chevrolet & GMC - Express 1500 2008-2014, Express 2500 2008-2015, Express 3500, Savana 1500, Savana 2500, Savana 3500, 4-PC Set

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Photo 1 of A-Premium O2 Oxygen Sensor Upstream and Downstream Compatible with Chevrolet & GMC - Express 1500 2008-2014, Express 2500 2008-2015, Express 3500, Savana 1500, Savana 2500, Savana 3500, 4-PC SetPhoto 2 of A-Premium O2 Oxygen Sensor Upstream and Downstream Compatible with Chevrolet & GMC - Express 1500 2008-2014, Express 2500 2008-2015, Express 3500, Savana 1500, Savana 2500, Savana 3500, 4-PC SetPhoto 3 of A-Premium O2 Oxygen Sensor Upstream and Downstream Compatible with Chevrolet & GMC - Express 1500 2008-2014, Express 2500 2008-2015, Express 3500, Savana 1500, Savana 2500, Savana 3500, 4-PC Set