Outfit your vehicle to be Ready for the Road Ahead with seamless hydraulic fluid transfers, with the Permco 5100 Series 2.5" Gear 2500 psi Hydraulic Pump. Due to its sophisticated design, this replacement pump is able to convert mechanical power from an engine into hydraulic energy that can be used to displace fluids throughout a vehicle. Constructed with an ultra-durable build to tolerate extreme pressures. FleetPride is your First Click in Heavy Duty .