Headers for 2002-2013 Silverado / Sierra (no HD Models) and Suburban, Yukon, Tahoe, Escalade and Avalanche. Also fits 2003-2009 Hummer H2. Part numbers THY-310Y-1-C. These are set up for trucks equipped with the 4.8 or 5.3 Liter engines and are not CARB legal.
These Doug Thorley Tri-Y headers are constructed of 14-gauge tubing with 3/8-inch flanges to give you the best quality you can get in a header! Plus they are ceramic coated to give a lifetime of performance!