Fits: 2001 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM/LML Duramax Diesel 

The BD Diesel driver side manifold not only removes the flow restriction found on the 2001-2016 model driver’s side manifold, but they also increase overall flow on both manifolds by 5%! Crafted with precision, the BD manifolds feature robust, 65% thicker designed castings constructed from high-silicon ductile iron to combat warping and cracking. Designed to be a one-stop drop-in kit, including all fasteners and gaskets needed to make installation quick.

Features:

• Cast iron construction with 65% thicker walls for increased toughness and resistance to cracking
  
• Predrilled pyrometer port on driver's side manifold for easy sensor install
  
• High temperature paint for corrosion protection
  
• 5% increase in flow to more efficiently transfer exhaust gases to the turbocharger
  
• Sold as a complete kit with gaskets and fasteners for easy install
  
• CARB EO No. D-553-36