This accessory drive belt tensioner assembly is designed to match the fit of an original equipment assembly on specified vehicles. It is engineered to help ensure proper belt tension when an original belt is slipping, broken, or worn from fatigue.

Automatic Belt Tensioner (Tensioner Only) 419-378 Features:

• Fits 2017-2019 Ford E-350 Super Duty; 2017-2019 Ford E-450 Super Duty; 2010-2014 Ford F-150; 2011-2020 Ford F-250 Super Duty; 2011-2016 Ford F-350; 2010-2020 Ford F-350 Super Duty; 2011-2014 Ford Lobo
• Direct replacement — this accessory drive belt tensioner assembly is designed to match the fit of an original equipment assembly on specified vehicles
• Ideal solution — engineered to help ensure proper belt tension when an original belt is slipping, broken, or worn from fatigue
• Durable construction — designed and manufactured to strict specifications for reliable performance
• Trustworthy quality — backed by a team of product experts in the United States and more than a century of automotive experience