The Dayton Parts 29-5/8" Rear Leaf Spring is the perfect choice for heavy duty applications. This leaf spring is engineered to provide maximum stability and support for heavy loads, ensuring proper fitment and compatibility. It is designed to handle the weight and stress associated with heavy duty applications and is specifically designed for Ford B and F series with cast spring brackets. Its reliable design ensures that you will receive the necessary support and stability. FleetPride is your First Click in Heavy Duty®.