There’s nothing like the feeling of taking a truck you already love and making it even better. When you want to give your truck the boost that it needs, these parts for 6.6 LLY Duramax fuel systems will make a big impact. We know how seriously our customers take their vehicles, and we want to support that as much as possible. Utilizing these parts for a 6.6 LLY Duramax fuel system will improve your engine’s functionality and help it last longer in the process. We here at Norcal Diesel Performance want to be your go-to place for parts and upgrades that will make your truck better than it ever was before.