Here, you'll find Norcal Diesel Performance’s collection of 2011-2016 6.6L diesel air intakes and accessories. No matter how long you’ve had your diesel truck for, whether it’s brand new or many years old, there’s always something you can do for it to improve its performance. A quick fix for more optimal performance is to improve your truck’s air intake system. These 2011-2016 6.6L diesel air intakes and accessories can keep your diesel truck in the best shape possible. By utilizing one of these air intake systems, you can improve performance in the short term and increase your truck’s lifespan as well.