2017-2020 F-150 3.5L Exhaust Manifold Kit (1043061)Receive performance and durability with BD Diesel's enhanced Exhaust Manifold Kit, specifically designed for the Ford 3. 5L EcoBoost engine. This BD upgraded manifold addresses common exhaust manifold bolt failures by incorporating two additional bolt holes per manifold and utilizing extended fasteners and spacers (15mm longer) to better withstand thermal expansion. BD has engineered these manifolds to flow 16% better than the original equipment