Firestone Heavy Duty Air Compressor 9335 direct drive compressor can be used in any position for easy installation. 12 volt operation, features a 30 percent duty cycle, 1/8 NPT ports and a maximum air pressure of 145 psi. Rated at 17 amps. Supports up to a 3 gallon air tank. Replaces old Firestone part number 9210. Ideal for construction vehicles, full time RVers and utility applications.