2017 Ford F-250 Super Duty 4WD models only. 2017 Ford F-350 Super Duty 4WD models only. 2021 Ford F-250 Super Duty 4WD models only. 2021 Ford F-350 Super Duty 4WD models only. 4X4 4WD MODELS ONLY. Made of forged solid steel for unsurpassed strength and durability.
