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11-16 Ford 3.5L Ecoboost BD Exhaust Manifold Kit

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 22 exhaust spacers and 22 class 8.8 studs designed to further improve thermal durability.


  • 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-9430-B, BL3Z-9430-D, 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


  • 8 Hours



  • 36-Months
  • 75,000 Miles


This product is patent pending for the manifold flange design


This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included. (EMS:4)

BD: 1043001

Lame California Prop 65 Notice