Lesjofors Coil Spring - 4004309 - Designed for heavy-duty applications, the Lesjofors Coil Spring - 4004309 is made from high-quality, corrosion-resistant steel for superior strength and durability. It features a progressive rate design that provides excellent handling and stability, and is designed to fit a variety of vehicles. The spring provides a comfortable ride and is an ideal choice for replacing worn-out springs.