Prepare your semi truck with improved suspension support for the journey ahead, with the OTR 5" x 3/4" Round Sh Overslung Spring Seat with Expertise Built In™. Thanks to its robust design, this replacement part is the ideal piece to dampen the vibrations and jolts of the leaf spring system. Crafted with ultra-durable materials to withstand heavy loads and regular use. FleetPride is your First Click in Heavy Duty®.