The LESJOFORS 4412133 Rear Coil Spring is engineered to provide superior support and durability for heavy-duty vehicles. Manufactured by LESJOFORS, a company with over 350 years of experience in spring manufacturing, this coil spring is designed to meet or exceed original equipment specifications, ensuring reliable performance in demanding operational conditions. Constructed from high-strength steel, the 4412133 coil spring undergoes a multi-stage process including heat treatment and shot peening to enhance its strength and fatigue resistance. A zinc phosphate coating, followed by an epoxy powder coat, offers exceptional protection against corrosion, extending the spring's service life and reducing maintenance costs. The pre-set design and rigorous testing of the 4412133 coil spring ensure optimal performance, contributing to a smoother ride and improved vehicle handling. This results in enhanced driver comfort and safety, as well as reduced wear on other suspension components. By choosing the LESJOFORS 4412133 Rear Coil Spring, fleet operators can invest in a high-quality, durable component that minimizes downtime and maximizes operational efficiency. Its compatibility with various heavy-duty vehicles makes it a versatile choice for maintaining optimal suspension performance across a fleet.