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

Balanced exhaust flow for more power and lower EGT  Exhaust Gas Temperatures. If your Duramax is running extra power and pulling heavy loads, we highly recommend adding this to keep you EGT's down.  We use it, like it, and recommend the Full Bore manifold. You may not know it, but the factory driver’s side exhaust manifold is pinched down to allow for steering shaft clearance, which actually isn’t required. As a result, this manifold only flows 80% of the passenger side. BD’s Full Bore exhaust manifold restores exhaust flow balance, improving power and reducing EGT.  Made from high-silicon ductile iron, the Full Bore is a direct, bolt-in replacement for the factory manifold and is even drilled and tapped to accept the most popular EGT probes.

Features:

• Replaces factory driver's side "pinched down" unit
• Restores exhaust flow and balances the V8 engine for smoother running
• Improves exhaust velocity to drive the turbocharger
• Improves power
• Direct, bolt-in replacement
• Tapped to accept the most popular EGT probes
• High-silicon ductile iron
• Lower EGT's
• This kit works correctly with EGR and all emissions controls present for the 2001-2016 LB7/LLY/LBZ/LMM/LML