Ensure your semi truck is Ready for the Road Ahead™ with seamless trailer coupling, with the Jost JSK37U Series Standard Fifth Wheel Top Plate. Thanks to its streamlined design, this replacement plate is able to act as the connection point between a vehicle and trailer, locking the two together while preventing unnecessary movement. Crafted with a solid and durable body to resist damage from repetitive connections and heavy duty equipment. FleetPride is your First Click in Heavy Duty®.