2011-2016 F-150 3.5L Exhaust Manifold Kit (1043001)The 2011 2016 Ford 3. 5L EcoBoost engine has an inherent design flaw where the original equipment manufacturer (OEM) manifold does not utilize all available cylinder head stud locations, leading to warped exhaust manifolds, broken exhaust studs, and blown manifold gaskets. BD Diesel has engineered this Exhaust Manifold Kit as a superior solution, designing a manifold that not only utilizes all 11 stud locations but also improves exhaust flow and