Pacesetter 72c2268 1-7/8" Long Tube Header for Chevy Silverado/Sierra 1500 5.3/6.2L (Non-CARB Compliant) Mandrel bent 1-7/8" Primary Tubes 3" Slip-Fit Collector Port-matched CNC Machined 3/8" thick flanges Necessary gaskets and fasteners are included ARMOR coat 2000 degree metallic ceramic coating; This item is not for sale in California/Non CARB compliant PaceSetter Headers come equipped with positions for all factory sensors 3" Slip-Fit Collector Port-matched CNC Machined 3/8" thick flanges Primaries are sequenced into the collector for the best scavenging Necessary gaskets and fasteners are included ARMOR coat 2000 degree metallic ceramic coating