The BD Diesel
Engineering Advantage
Defeating the Ford Stud-Shear Defect
Factory Ford manifolds—across both gas and diesel platforms—suffer from severe thermal distortion that puts immense shear force on the mounting hardware. Our manifolds feature heavily reinforced, thick-gauge mounting flanges that distribute clamping force evenly, permanently protecting your cylinder head studs from snapping.
True Port Matching
Every manifold runner is precision-engineered to perfectly mirror the exit ports of the cylinder head. This exact alignment maintains maximum exhaust gas velocity, eliminating the performance-robbing turbulence and false EGT readings common with generic aftermarket castings.
Advanced Casting Tolerances
Utilizing modern high-silicon ductile iron allows us to cast uniform wall thicknesses across the entire manifold body. This eliminates structural thin spots and hot spots, ensuring the casting handles continuous high-RPM workloads or intense towing heat cycles without warping.