⬢ UPGRADED 11-STUD DESIGN 
•  Solves the factory 3.5L EcoBoost exhaust manifold flaw by utilizing all 11 threaded stud holes on the cylinder head—adds 3 extra stud locations for superior clamping force, reducing warping and gasket failure.

⬢ ENHANCED THERMAL DURABILITY
•  Constructed from thick-wall high-silicon ductile iron and 304 stainless steel to resist thermal stress cracking and warping, ensuring long-term reliability under extreme engine conditions.

⬢ COMPATIBLE MODELS
•  For Ford F-150 (2011-2016), Expedition (2015-2017), Transit (2015-2024), Lincoln Navigator (2015-2017), Mark LT (2011-2014) with 3.5L EcoBoost engine.

⬢ REPLACES OEM PART NUMBERS
•  BL3Z-9430-B, BL3Z-9430-D, BL3Z-9431-B, BL3Z-9431-D