The Westar ST-7914 Coil Spring Insulator is a rear, upper component designed for direct fitment as an OE replacement. This insulator serves as a cushion between the coil spring and the vehicle's frame or mount, effectively reducing noise and preventing metal-on-metal contact. By maintaining proper spring alignment throughout suspension travel, it ensures consistent ride quality and minimizes premature wear on struts or mounts. This component is sold individually and comes with a 1-year or 12,000-mile limited warranty.