S&B Filter 75-5021D Cold Air Intake For 07-08 GMC Sierra 4.8L, 5.3L, 6.0L Dry Dry Extendable WhiteMaximum Performance Our cold air intake for the 2007 2008 Silverado Sierra 1500 was engineered to minimize air restriction and flows 47. 5 percent better than stock. This kit comes with a fully enclosed airbox that protects the filter from dirt and keeps out engine heat. Protect Your Engine This kit comes with a massive, highly efficient air filter which results in better performance and protects your engine. Available in either 8 layer Cotton