Upgrading the rods, pistons, and cams in your 2017-2019 GM 6.6L Duramax L5P is one of the keys to unlocking serious performance gains and ensuring your engine can handle the demands of high-power applications. Stronger rods can withstand higher stress and boost overall engine reliability, while high-performance pistons are built to endure extreme pressures, improving both durability and power. Performance camshafts improve valve timing and lift, allowing you to customize your engine’s power curve for greater horsepower and torque. Together, these upgrades ensure your Duramax is ready for anything you throw its way. GM Duramax Fitments: 2017, 2018, and 2019 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.