BD Diesel BD Exhaust Manifold Passenger Side Ford F-150 3.5L Ecoboost 2011-2016

The 2011-2016 Ford 3.5L has an inherent design flaw where not all of the OE stud locations are utilized by the OE manufacturer which leads to warped exhaust manifolds, broken exhaust studs and blown manifold gaskets. The cylinder head on Fords 3.5L Gas Ecoboost has threaded holes for 11 exhaust studs to be used, however the OE manifold only utilizes 8 of those stud locations. BD has designed a manifold that not only utilizes all 11 stud locations, but also improves exhaust flow and has improved durability, the way it should have come from the factory. BD's Ford 3.5L exhaust manifolds are made from thicker-walled high silicone ductile iron designed to resist thermal warping. Each kit includes 11 exhaust spacers and class 8.8 studs designed to further improve thermal durability. Passenger Side Utilize 3 additional exhaust stud locations BD Thick wall high-silicon ductile cast iron resists thermal warping 15mm longer exhaust studs + spacers New studs, spacers, and nuts included Replaces Ford OEM part numbers: BL3Z-9431-B, BL3Z-9431-D Ford Expedition 2015-2017 Ford F-150 2011-2016 Ford F-150/Lobo 2015-2016 Ford Transit 2015-2023 Lincoln Mark LT 2011-2014 Lincoln Navigator 2015-2017 Suggest optional 1043002 addition parts kit for easier install