EXHAUST MANIFOLD PASSENGER SIDE FORD 3.5L ECOBOOST F-150 2011-2016
[shortdesc]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. FEATURES Average flow increase of 25.9% (OEM avg 28.4cfm/port BD avg 139cfm/port) Passenger Side Utilize 3 additional exhaust stud locations BD Thick wall high-silicon ductile cast iron resists therm