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BD Diesel's exhaust manifold kit for 2017–2020 Ford 3.5L EcoBoost addresses common OEM bolt failures with two additional mounting holes per manifold plus extended studs, spacers, gaskets and new hardware. Cast from high-silicon ductile iron for thicker, uniform walls, the manifolds flow about 16% better than OEM and include parts to resist thermal expansion. CARB EO D-553-27 is listed for 50-state legality.
BD Diesel 17-20 Ford Ecoboost 3.5L Exhaust Manifold Kit
