2007.5-2010 GM Duramax 6.6L LMM Heads

Replacing the cylinder head on your 2007.5-2010 GM 6.6L Duramax LMM is a great way to accommodate for the high-performance engine modifications you've slapped on. A new cylinder head improves the overall airflow in and out of your engine which helps create the power and torque curve. Here at Alligator Performance, we carry a variety of GM Sierra/Silverado Cylinder Heads that work for specific applications including engine displacement, desired compression ratio, other performance mods and more. GM Duramax Fitments: 2007, 2009, 2010 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.