Equip your semi truck to be Ready for the Road Ahead™, with the Dayton Parts 8.5" x 4.375" Bar Pin Bushing Kit, a key piece that helps connect suspension system components. By acting as a mounting interface, this replacement piece helps connect suspension components while reducing vibration, articulation, and alignment. Engineered with a premium design to help reduce vibrations and maintain the best alignment possible. FleetPride is your First Click in Heavy Duty®.