Upgrade your Duramax engine with the XDP Starter Bolt Kit (Black-Phosphate), designed specifically for 2001-2022 GM 6.6L Duramax models. This high-quality replacement kit effectively tackles the common issue of corroded starter bolts, ensuring a reliable and robust connection for your starter. With its durable black phosphate finish, this kit outperforms standard options, providing enhanced protection against the elements and violent vibrations.