2001-2016 GM 6.6L Duramax High Flow Race Exhaust Manifolds & Gaskets

High Flow Race Exhaust Manifolds & Gaskets

Cast iron high-flow exhaust manifolds for 2001-2016 GM 6.6L Duramax engines (LB7, LLY, LBZ, LMM, LML). These manifolds flow up to 20% more than the factory cast log manifolds, eliminating the bottlenecks that hold back your turbo.

What You Get

• Heavy-duty cast High-Silicon Molybdenum ductile iron construction - handles extreme heat
• Up to 20% higher exhaust flow over stock manifolds
• Pre-tapped 1/8" NPT pyrometer (EGT) port for easy gauge installation
• Eliminates factory manifold flow restrictions and cracking issues

Installer Hardware Kit (Optional)

Add the installer kit for a complete bolt-on package:

• Stainless steel manifold studs
• 12-point stainless nuts
• Multi-layer stainless exhaust gaskets
• Up-pipe-to-manifold bolts

Up-Pipes (Optional)

Add 2" 304 stainless steel high-flow up-pipes for the full manifold-to-turbo upgrade. These up-pipes flow approximately 50% more than stock and feature internally sleeved 3-layer bellows to prevent collapse.

Fitment

• Engine: 6.6L Duramax (LB7, LLY, LBZ, LMM, LML)
• Years: 2001-2016
• Trucks: Chevy Silverado 2500HD/3500HD, GMC Sierra 2500HD/3500HD

Need Help?

Not sure which options you need? Text us at (512) 522-9403 or email slabindustriesdiesel@gmail.com - we'll help you configure the right setup for your truck.