BD Diesel Exhaust Manifold Kit 15-19 Ford F250/350 | 17-19 F350/450/550 6.7 PowerstrokeUpgrade your exhaust manifolds in your 2015 2019 Ford 6. 7L Powerstroke and solve a common problem with this manifold kit from BD Performance. Crafted with a heavy duty 0. 275" thick walled Hi Silicon ductile casting, this makes these manifolds 75% thicker to combat cracking due to high exhaust temperatures. Thermal durability has been improved with longer exhaust studs and spacers plus thicker, more durable machined bolting flanges. To maximize