EXHAUST MANIFOLD KIT FORD F-150 3.5L ECOBOOST 2017-2020

These manifolds were engineered to solve the OEM stud failure by using a more robust mounting system and materials that better manage heat. The design adds clamping force and allows for thermal expansion without stressing the fasteners. — The primary upgrade is the use of two previously unused mounting holes in the cylinder head for each manifold, increasing the total number of studs and distributing clamping force more evenly. This kit includes 15mm longer studs and matching spacers, which allow the manifold to expand and contract during thermal cycles without putting excessive shear or tensile stress on the studs. The manifold itself is a thicker casting made from high-silicon ductile iron, which is significantly more resistant to warping and cracking than the factory cast iron, ensuring a flat, leak-free seal over thousands of miles.

The complete kit, part number 1043061, includes both the driver and passenger side exhaust manifolds. It also includes a full set of new gaskets and all the specialized hardware required for installation. — Inside the box, you will find everything needed for a complete replacement of both factory manifolds. This includes: — • Driver Side Manifold (also sold as PN 10643063) • Passenger Side Manifold (also sold as PN 10643062) • A complete set of high-quality exhaust gaskets • Extended 15mm longer exhaust studs and matching spacers • All necessary fastening nuts • A specialized stud installation tool to ensure correct and simplified assembly.

These BD Diesel exhaust manifolds provide a 16% increase in airflow compared to the factory units. This improvement enhances overall engine efficiency, reduces exhaust backpressure, and supports better turbo response. — The performance benefit comes from the carefully engineered design that reduces restriction right at the exhaust port. By allowing exhaust gases to exit the cylinder head more freely, the engine works more efficiently, and the turbochargers can spool up quicker. While the manifolds themselves add efficiency, the gains are most noticeable when combined with other performance upgrades like ECU tuning, larger downpipes, or upgraded intercoolers, as the improved flow provides the necessary capacity to support higher power levels.

Installation is a significant job with an estimated time of 9 hours for both sides. The kit includes specialized hardware and a stud installation tool to aid the process, but access to the manifolds is challenging. — The job is rated at approximately 5.5 hours per side. Accessing the exhaust manifolds on the 3.5L EcoBoost engine is labor-intensive and may require the removal of numerous components to gain clearance. The kit simplifies the hardware portion by including all necessary gaskets, longer studs, and a helpful stud install tool. However, due to the complexity and time involved, professional installation is often recommended unless you are a very experienced technician with a well-equipped shop.

Yes, you can purchase the manifolds individually if you do not need the complete kit. The driver's side is available as part number 10643063, and the passenger's side is sold separately as part number 10643062. — Although single-side purchase is an option, it's highly recommended to replace both manifolds at the same time. The factory manifolds are exposed to identical conditions, meaning if one has failed due to warping or cracking, the other side is likely to fail soon after. Installing the complete kit (PN 1043061) ensures a balanced, long-term repair, upgrading both sides to the superior high-silicon ductile iron material and improved mounting design, preventing you from having to repeat the lengthy installation process in the near future.