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aFe Twisted Steel Headers Up-Pipes & Down-Pipe 11-15 GM Diesel Trucks V8-6.6L (td) LML

aFe Twisted Steel Headers Up-Pipes & Down-Pipe 11-15 GM Diesel Trucks V8-6.6L (td) LML

$2,628.99 USD
$2,509.00 USD $2,628.99 USD
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Orders over $99 ship free in the lower 48. Most in-stock gear leaves the warehouse the next business day. Wrong fitment? Send it back within 30 days — we'll help you find the part that does fit.

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Not sure if this fits your platform? Tell us your year, make, model, and trim — we'll confirm before you order. For bigger builds, we'll help you plan the full stack.

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Every product on this site ships through authorized channels with full manufacturer warranty. If something breaks in normal use, we'll help you get it resolved.

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Stainless Steel Construction: The headers are constructed out of heavy duty gauge, mandrel-bent 304 stainless steel tubing with a .120" wall for strength and durability. The up-pipes and down-pipe are constructed out of 2" and 3" mandrel-bent 304 brush finished stainless steel tubing.Optimized Tube Lengths: Tube lengths and mitered collectors are optimized for true pulse control technology which improves flow and performance across the power band.Heavy-Duty Flanges: A CNC-machined v-band inlet flange and heavy-duty outlet flange provide a secure, leak-free seal.EGT Ports: Two exhaust gas temperature (EGT) ports are provided with this system. A 1/8 NPT EGT probe port is incorporated into the driver™s side manifold and a M14x1.5 port in the down pipe. This allows for easy installation of sensors, gauges or testing equipment.4" Interlock Flex Pipes: The up-pipes utilizes heavy duty 4" flex tubes with internal interlock liners.Retains EGR Flange: This system retains the EGR flange.Factory Mounting Locations: These headers utilize factory locations making it a true bolt-on system, no cutting or drilling required and includes all necessary hardware for a hassle-free installation.Fitment Note: This item will not fit models manufactured after July 2014 equipped with a 3 bolt flanged down-pipe.aFe POWER exhaust systems are engineered and manufactured in our Corona, California facility.

This Part Fits:

Year Make Model Submodel
2015 Chevrolet Silverado 2500 HD High Country
2011-2015 Chevrolet Silverado 2500 HD LT
2011-2015 Chevrolet Silverado 2500 HD LTZ
2011-2015 Chevrolet Silverado 2500 HD WT
2015 Chevrolet Silverado 3500 HD High Country
2011-2015 Chevrolet Silverado 3500 HD LT
2011-2015 Chevrolet Silverado 3500 HD LTZ
2011-2015 Chevrolet Silverado 3500 HD WT
2015 GMC Sierra 2500 HD Base
2011-2015 GMC Sierra 2500 HD Denali
2011-2015 GMC Sierra 2500 HD SLE
2011-2015 GMC Sierra 2500 HD SLT
2011-2014 GMC Sierra 2500 HD WT
2015 GMC Sierra 3500 HD Base
2011-2015 GMC Sierra 3500 HD Denali
2011-2015 GMC Sierra 3500 HD SLE
2011-2015 GMC Sierra 3500 HD SLT
2011-2014 GMC Sierra 3500 HD WT

  • Free shipping over $99

    Orders over $99 ship free in the lower 48. Most in-stock gear leaves the warehouse the next business day.

  • Wrong fitment? We make it right.

    If a part doesn't fit your platform the way it should, send it back. We handle the return and find you the part that does.

  • Authorized dealer support

    Every product moves through proper channels. Full manufacturer warranty, real tech support — no gray-market headaches.