High Flow Up Pipes designed for 2001–2004 GM 6.6L Duramax diesel trucks with cast race manifold setup. These manifolds and up-pipes are designed to lower EGT's, reduce drive pressure and accelerate turbo spool-up time. The up-pipes feature heavy duty bellows that are internally sleeved and are manufactured from aircraft grade material, improving exhaust flow to the turbocharger and reducing restriction in your LB7 Duramax performance build.

Fitment

• 2001–2004 Chevrolet Silverado 2500HD/3500HD — LB7
• 2001–2004 GMC Sierra 2500HD/3500HD — LB7

Product Details

• Up Pipe Construction: Aircraft-grade 304 stainless steel with .120" wall thickness and internally sleeved bellows
• Flow Improvement: Up to 55% increase in air flow over stock
• Manifold Material: High quality Silica Moly Cast Iron
• Internal Design: Designed with a gradual increase in internal diameter as more exhaust ports are added, allowing for added volume within the manifold while keeping the maximum velocity possible
• Performance Benefits: Designed to lower EGT's, reduce drive pressure and accelerate turbo spool-up time— all while maintaining reliability
• Inclusions: Kit includes exhaust manifold gaskets, up-pipe to turbo gaskets, up-pipe to manifold gaskets, and bolts — all gaskets necessary to install these high-flow manifolds and up-pipes
• Downpipe Compatibility: Factory downpipe (2001-2004 LB7 only) does not fit aftermarket manifolds and up-pipes

Installation

These up pipes are a direct bolt-on replacement for factory-style components when paired with a compatible cast race manifold. Installation requires removal of the factory exhaust manifolds and pipes, then bolting the new high-flow assembly to the cylinder head and turbo inlet.

Check local emissions regulations before purchase. Professional installation is recommended.

Get the right part the first time.