2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Head Studs & Main Studs

For those pushing the limits of their 2020-2025 GM 6.6L Duramax L5P build, upgrading to high-performance head studs and main studs is necessary. These heavy-duty fasteners are designed to provide superior clamping force, preventing head gasket failures and engine damage when running high boost levels or increased horsepower. They're ideal for heavily modified or high-stress applications as they offer far greater strength and reliability compared to the stock bolts. Pair these studs with new Gaskets or any Rods, Pistons & Cams to get the most out of your 6.6L Duramax. GM Duramax Fitments: 2020, 2021, 2022, 2023, 2024, 2025 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.