The Energy Suspension Mack Trunnion Bushing is a durable and practical choice for your vehicle's suspension system. Constructed of hyper-flex polyurethane, this bushing is available in red or graphite and measures 6 9/16 inches in length with an outer diameter of 4 11/16 inches and an inner diameter of 3 7/16 inches. Sold individually, this bushing is impervious to road salt, petroleum products, smog, ozone, and road contaminants, making it a long-lasting and environmentally friendly option for your vehicle's maintenance needs.