2006-2007 Silverado/Sierra 2500/3500 Max Air Flow Bundle Kingsport Grey " AFE POWER 2011-2012 GMC Sierra 2500 HD

2011-2012 GMC Sierra 2500 HD WT Fleetside 78

not all O-rings will be utilized

These covers also go away from the factory rubber sealing gasket and use RTV to seal to the block

7% better than stock

5 inch lift height

2006-2007 Silverado/Sierra 2500/3500 Max Air Flow Bundle Kingsport Grey " AFE POWER 2011-2012 GMC Sierra 2500 HDThis kit will allow you and your engine to breathe easy. Featuring a mandrel bent 4. 5 inch intake tube for massive airflow gains, with HSP's signature heat shield box eliminating unwanted hot air entering the cold air intake. For every 1 Degree increase in intake air temperature will result in a 3hp loss. This kit also features HSP's high flow turbo mouthpiece. This turbo mouthpiece will give you the ability to reroute your factory PCV system and