Product Details: Outfit your semi to be ready for the long haul with a reliable hydraulic dump to transfer loads, with the OTR PK Series 15 GPM Hydraulic Box Pump with Expertise Built In™. Thanks to its pressure-driven design, this replacement component is able to elevate the beds of trucks or trailers to dump the contents on the surface below. Fashioned with a durable metal body to handle high-pressure applications. FleetPride is your First Click in Heavy Duty®.