BD Diesel's exhaust manifold set for 2011–2016 Ford 3.5L EcoBoost uses all 11 cylinder-head stud locations and thicker-wall high-silicon ductile iron to resist thermal warping. The kit includes 22 spacers and 22 class 8.8 studs, plus extended stud length, addressing stud failure and warped manifolds while improving exhaust flow and durability for the listed Ford and Lincoln models.
BD Diesel Exhaust Manifold Set - Ford F-150 3.5L Ecoboost 11-16