01-07 Duramax Exhaust
Downpipe Back Exhaust (01-07 Duramax LB7 LLY LBZ) If you own a 2001-2007 Silverado or Sierra 2500HD/3500HD with a 6.6L Duramax (LB7, LLY, or LBZ), the factory exhaust is restrictive and holds these trucks back. This downpipe back exhaust replaces the OEM piping with a full mandrel bent T409 stainless system built for improved airflow, lower EGTs, and long term durability. This is not a universal kit. This system is built specifically for your Duramax. Benefits Improved exhaust flow over stockLower exhaust gas temps (EGTs)Faster spool and better throttle responseDeeper, smoother tone (with proper tuning)Built to support upgraded turbos and power mods Features T409 stainless steel construction for corrosion resistance and long lifeMandrel bent tubing (no crimps, no restrictions)Leak free flanges with upgraded clamps for a better sealPre welded hangers for easier install and a secure fitNo sensor bungs for a clean straight pipe design Fitment Fits:2001-2007 Silverado / Sierra 2500HD &a