The Dayton Parts Front Leaf Spring is a high-quality replacement part that offers superior performance and durability. This leaf spring features a full taper design, which means that the width and thickness of the leaves decrease gradually from the center to the ends. This design provides a smoother ride and better handling, as well as improved stability and control. Constructed using a single steel alloy, this leaf spring is built to withstand the toughest conditions and provide long-lasting performance. It consists of three individual metal leaves stacked on top of each other, each carefully crafted to provide optimal support and strength. With a spring width of 4.00" and a spring pack thickness of 2.50", this leaf spring is designed to provide a comfortable ride while also delivering the necessary support and stability for heavy duty applications. It has a spring capacity at pad of 6560 lbs, making it suitable for use in a wide range of Kenworth vehicles. Its a reliable and high-quality replacement part that is built to meet or exceed OEM specifications. FleetPride is your First Click in Heavy Duty®.