2004.5-2005 GM Duramax 6.6L LLY Flex Plates

When your 2004.5-2005 GM 6.6L Duramax LLY starts to hit those big power levels through various performance modifications and tuning, the factory flexplate is likely overdue for an upgrade. Our entire selection of Dual Disc Clutches and aftermarket Flexplates can handle much more power over stock, letting you push your custom GM Sierra/Silverado 2500/3500 to it's limit in terms of performance. GM Duramax Fitments: 2004, 2005 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.