Upgrade your Ford F-150's performance with the BD Diesel Exhaust Manifold Set, designed specifically for the 2011-2016 3.5L Ecoboost engine. This high-quality manifold addresses an inherent design flaw in the original equipment (OE) by utilizing all 11 exhaust stud locations, ensuring a secure fit and improved durability. With BD's innovative design, you can expect enhanced exhaust flow and reduced risk of warping, broken studs, and blown gaskets. Crafted from thicker-walled high silicone ductile iron, this manifold set is built to withstand the demands of high-performance driving. Each kit comes complete with 22 exhaust spacers and class 8.8 studs, providing additional support for thermal durability. Whether you're hitting the trails or cruising through the city, this manifold set is engineered to perform at its best, making it a must-have for any serious Ford F-150 enthusiast. Don't settle for less; improve your vehicle's efficiency and longevity with the BD Diesel Exhaust Manifold Set. Experience the difference in performance and reliability for your Ford F-150 3.5L Ecoboost today! <b>Features:</b> * Improved exhaust flow: Designed to enhance engine performance.: Improved exhaust flow: Designed to enhance engine performance. * Thicker-walled construction: Made from high silicone ductile iron for thermal resistance.: Thicker-walled construction: Made from high silicone ductile iron for thermal resistance. * Utilizes all 11 stud locations: Secures a better fit to prevent warping and leaks.: Utilizes all 11 stud locations: Secures a better fit to prevent warping and leaks. * Includes 22 exhaust spacers and class 8.8 studs: Ensures maximum durability.: Includes 22 exhaust spacers and class 8.8 studs: Ensures maximum durability.