Power Source Custom Power Source Options to Meet any Application Cat Pumps offers a wide variety of power sources to meet the demands of any application. Base Configuration Power Source Drive Package Popular Accessories Electric Motors Electric Motors Our most popular power source is electric motors. Available in sizes ranging from 0.25 to 200 HP from various manufacturers. Gas Engines Gas Engines For portable applications or installations that do not have an electric source available, we have a variety of gas engine sizes available from various manufacturers. Diesel Engines Diesel Engines For portable or higher horsepower installations, we have built a variety of diesel custom systems. Hydraulic Motors Hydraulic Motors For custom systems being installed where hydraulics are available, we offer a variety of hydraulic motors to meet your application needs. Pneumatic Motors Pneumatic Motors For explosive environments or where an air source is plentiful, we have a variety of pneumatic (air-driven) motors available.