The 2005 to 2022 Ford Super Duty front axles are one of the best junkyard upgrades out there. They have thick tubes, big knuckles, strong unit bearings, and the aftermarket support is huge. The standard Super Duty axles come with smaller U joints, but the larger 1.5 ton and up versions use the big 1550 U joints, and the regular Super Duty axles can be upgraded to 1550s. That makes them perfect for big tires, off road abuse, and solid axle swaps on Dodges and Chevys. They are reliable, everywhere