The URO Parts Coil Spring Insulator - 008842 is a rubber component designed to fit between the coil spring and the vehicle's chassis. It acts as a buffer, absorbing shock and preventing metal-on-metal contact between the spring and the chassis. This helps to reduce noise and vibration, as well as extend the lifespan of the coil spring. The insulator is specifically designed for use in various models of vehicles and is made with high-quality materials for durability and performance.