The Delphi TD4661W Coil Spring Insulator is engineered to provide a precise fit for 1989-2003 Ford Ranger rear-wheel-drive models, ensuring optimal suspension performance. This insulator serves as a protective barrier between the coil spring and the vehicle's chassis, effectively reducing noise and vibration during operation. Constructed from high-quality rubber, it offers durability and resistance to wear, contributing to the longevity of the suspension system. The insulator's design withstands extreme temperatures, from below -40°C to over 120°C, and is exposed to 720 hours of salt spray, ensuring reliable performance in various environmental conditions. Its dimensions include an inside diameter of 1.77 inches, a thickness of 0.71 inches, a width of 3.03 inches, and an outside diameter of 3.03 inches, making it a direct fit replacement for the original part. By incorporating the Delphi TD4661W Coil Spring Insulator, fleet operators can enhance vehicle comfort and maintain the integrity of the suspension system, leading to improved operational efficiency and reduced maintenance costs.