The 2011-2016 Ford 3.5L EcoBoost engine has an inherent design flaw where the original equipment manufacturer (OEM) manifold does not utilize all available cylinder head stud locations, leading to warped exhaust manifolds, broken exhaust studs, and blown manifold gaskets. BD Diesel has engineered this Exhaust Manifold Kit as a superior solution, designing a manifold that not only utilizes all 11 stud locations but also improves exhaust flow and enhances durability. These BD manifolds are made from thicker-walled high-silicon ductile iron to resist thermal warping. They utilize 3 additional exhaust stud locations and include 22 exhaust spacers and 22 class 8.8 studs (15mm longer) designed to further improve thermal durability. The result is an average flow increase of 25.9% over OEM, providing both improved performance and long-term reliability.

Features

• Designed to utilize all 11 cylinder head stud locations to prevent warping and cracking
• Made from BD Thick wall high-silicon ductile cast iron** resists thermal warping
• Average flow increase of 25.9% (OEM avg 110cfm/port | BD avg 139cfm/port)
• Includes 22 exhaust spacers and 22 class 8.8 studs (15mm longer)
• Kit includes new studs, spacers, and nuts
• Replaces Ford OEM part numbers: BL3Z-9430-B, BL3Z-9430-D, BL3Z-9431-B, BL3Z-9431-D

Specs

• Material: High-silicon ductile cast iron
• Maximum Stud Locations Utilized: 11 (3 additional over OEM)
• Flow Increase: Average of 25.9%
• Bolt Length: 15mm Longer (Class 8.8)
• CARB EO No. D-553-18, D-553-27

Compatibility Notes

• Fits Ford F-150 3.5L EcoBoost models from 2011 to 2016.
• Also fits Ford Transit models from 2015 to 2024.
• Also fits Ford Expedition models from 2015 to 2017.
• Also fits Lincoln Mark LT models from 2011 to 2014 and Lincoln Navigator models from 2015 to 2017.

Notes

• The product is 50-STATE LEGAL!
• The product is backed by a 36-month, 75,000-mile warranty on parts.
• Suggest optional 1043002 addition parts kit for easier installation.