aFe Power ATLAS 3 Steel Downpipe, 2001-2004 LB7 Federal Emissions

Fits: 2001 thru 2004 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7 Duramax Diesel *Federal Emissions engines only!* The aFe ATLAS turbo down-pipe is engineered to outflow and outperform the restrictive, OE down-pipe on your 2001-2004 Chevy Silverado or GMC Sierra 2500HD/3500HD with the Duramax V8 6.6L turbo diesel. The 3″ mandrel-bent steel tubing offers smoother transition bends for increased airflow, delivering quicker turbo spool times. CNC machined V-band inlets and outlets ensure an OE-style, 360 degree sealing surface. Coated with a black finish, the ATLAS turbo down-pipe is wrapped with thermal header tape to reduce EGT’s even in the most extreme environments. *50 State Legal CARB EO#D-550-48* Features: 3″ mandrel bent, black finished steel for increased airflow and long-lasting good looks Replaces OE down-pipe for true bolt on performance Wrapped in high-temp thermal tape for insulation to reduce EGTs CNC machined inlet flange and V-band outlet flanges for a leak-free seal Includes turbine gasket (LB7 Only) Includes: 3″ Mandrel Bent Downpipe Heat Wrap Turbine Gasket