Headers for 2006-2009 Monte Carlo SS and Impala SS! Part number THY-340-C. These headers fit the 5.3 liter engine 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!