Get your vehicle Ready for the Road Ahead with seamless hydraulic fluid transfers, with the Permco 197 Series 1.25" Gear 4000 psi Hydraulic Pump. With a 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. Manufactured with an ultra-durable build to tolerate extreme pressures. FleetPride is your First Click in Heavy Duty .