1X Oxygen Sensor. 2008-2013 Chevrolet Silverado 1500 V8-4.8L Downstream. 2008-2012 Chevrolet Silverado 1500 V8-5.3L Downstream. 2009-2013 Chevrolet Silverado 1500 V8-6.2L Downstream. 2008-2010 Chevrolet Silverado 2500 HD V8-6.0L Downstream Right Cab & Chassis only.
