The Energy Suspension Mack Trunnion Bushing is a durable and practical solution for your Mack truck. Constructed of Hyper-Flex Polyurethane, this bushing is impervious to road salt, petroleum products, smog, ozone, and road contaminants. With a length of 6-9/16 inches, an outer diameter of 4 11/16 inches, and an inner diameter of 3 7/16 inches, it is designed to replace the Mack OEM Part Number 10QK219P2. Available in red or graphite (black), this bushing is sold individually and offers long-lasting performance and protection for your truck.