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Alliant Power
2011-2016 GM/Chevrolet 6.6L Duramax LML Alliant Power Contamination Kit
$4,558.89$4,558.89$3,840.53 -
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![2011-2015 GMC/Chevrolet 6.6l Duramax LML Upgraded 3\" High Flow 3” Turbo Downpipe](https://cdn11.bigcommerce.com/s-t16sohku0j/images/stencil/500x659/products/615/7408/GMLML-1__04446.1749070345.1280.1280_1769620423__37132.1769627189.jpg?c=2 "2011-2015 GMC/Chevrolet 6.6l Duramax LML Upgraded 3\\" High Flow 3” Turbo Downpipe")
![2011-2015 GMC/Chevrolet 6.6l Duramax LML Upgraded 3\" High Flow 3” Turbo Downpipe](https://cdn11.bigcommerce.com/s-t16sohku0j/images/stencil/500x659/products/615/7409/GMLML-2__77944.1749070347.1280.1280_1769620424__06571.1769627190.jpg?c=2 "2011-2015 GMC/Chevrolet 6.6l Duramax LML Upgraded 3\\" High Flow 3” Turbo Downpipe")
ENGINE COMPONENTS
Premium Engine Components for 2011–2016 6.6L Duramax LML
Upgrade, maintain, or rebuild your truck with confidence using our selection of engine components for the 2011–2016 6.6L Duramax LML, featuring essential engine parts designed to improve durability, performance, and long-term reliability. This page includes high-quality options like Alliant Power contamination kits for addressing fuel system failures, EGR delete kits for off-road performance applications, and both ARP and aftermarket cylinder head stud kits to help secure your engine under higher boost and stress. You’ll also find exhaust manifold kits (driver and passenger side) and a high-flow 3-inch turbo downpipe to improve exhaust flow and overall efficiency. Whether you’re tackling a major repair or upgrading for better airflow and strength, these engine components are built to help your LML Duramax run stronger, cooler, and more reliably under demanding conditions.