2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Heads & Valve Train

The OEM Cylinder Heads on your 2011-2016 GM 6.6L Duramax LML play a huge role in determining compression while helping create your engine's power and torque curve. With a component as versatile as your cylinder heads, it's best to only replace them with a premium upgrade you can count on. Here at Alligator Performance, we only work the most trusted and reliable brands in the industry to provide our customers with the best possible components for their rig. Unlock the full potential out of your GM 2500/3500 by investing in any of the premium cylinder heads we offer today! Check out our full selection of Engine Upgrades for additional performance! GM Duramax Fitments: 2011, 2012, 2013, 2014, 2015, 2016 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.