2001-2016 Duramax 2" 304 Stainless Up-Pipes (LB7/LLY/LBZ/LMM/LML)

2" 304 Stainless Steel Up-Pipes - Duramax LB7 through LML

OEM-length high-flow up-pipes for 2001-2016 GM 6.6L Duramax engines. These 2" 304 stainless steel up-pipes replace the restrictive factory pipes that choke exhaust flow from the manifolds to the turbocharger.

What You Get

• 2.00" outside diameter, 11-gauge (.120" wall) 304 stainless steel tubing
• OEM-length driver and passenger up-pipes - direct fit replacement
• Passenger pipe indented for proper firewall clearance
• Approximately 50% more flow over stock up-pipes
• Free-flowing internally sleeved 3-layer bellows - prevents collapse under high boost
• 4 stainless gaskets included (replaces GM 97192618 / 97188685)
• 12x Grade 12.9 bolts and washers included

Why Upgrade Your Up-Pipes?

Factory Duramax up-pipes are restrictive and prone to leaking, especially on higher-mileage trucks. These 2" stainless pipes open up the flow path between your exhaust manifolds and turbo, improving spool time and reducing EGTs. The 3-layer bellows design flexes with thermal expansion without collapsing - a common failure point on cheaper up-pipes.

Fitment

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

Need Help?

Questions about fitment or installation? Text us at (512) 522-9403 or email slabindustriesdiesel@gmail.com.