aFe ATLAS Turbo Down-Pipe for Chevy Silverado Duramax 6.6L 3" Mandrel Bent Steel

aFe ATLAS Turbo Down-Pipe for Chevy Silverado / GMC Sierra Duramax 6.6L Maximize turbo efficiency and lower under-hood temperatures with the aFe ATLAS 3" mandrel-bent turbo down-pipe, engineered for 2004.5–2010 Chevy Silverado and GMC Sierra 2500HD/3500HD Duramax 6.6L V8 turbo diesel trucks. Precision construction improves flow, reduces EGTs, and accelerates spool for towing and heavy-duty use. Key Features 3" Mandrel-Bent Steel — smooth-radius bends reduce turbulence and backpressure for consistent flow. CNC-Machined V-Band Inlet & Outlet — OE-style 360° sealing surface for leak-free, secure connections. Thermal Protection — high-temp black coating plus thermal header tape to lower exhaust gas temps and protect surrounding components. Direct Fit Installation — uses factory mounting points for a straightforward bolt-on swap and OE-aligned fitment. Performance Benefits Outflows the restrictive OE down-pipe to deliver faster turbo spool, improved throttle response, and more consistent boost under load. Rugged steel construction and precision flanges ensure long-term sealing reliability in high-temperature duty cycles, ideal for towing and commercial applications. Fitment & Compliance Fits 2004.5–2010 Chevy Silverado and GMC Sierra 2500HD/3500HD with the Duramax 6.6L V8 turbo diesel. Not CARB exempt — not for sale or use in California or on vehicles required to meet California emissions. Check local regulations before purchase.