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VIAIR’s 300P is a larger portable compressor kit with a 150 PSI rating that is capable of inflating up to 33-inch tires easily by simply clamping the power leads to your battery, connecting the tire chuck to the valve stem, and turning the unit on. Tire pressure can be monitored using the 5-in-1 inflator/deflator inline pressure gauge. This compression system includes a range of accessories stowable in its soft carry case, including inflation tips, a 5-in-1 inflator/deflator open-ended air hose with 100 PSI gauge, dual heavy-duty direct battery clamps, and more.


  • For tires up to 33 inches
  • Powerful portable compressor
  • Connects to your vehicle battery, then connects to the valve stem, and turns on
  • Thermal Overload Protector
  • Permanent magnet motor
  • 5-in-1 Inflator/Deflator Air Hose with Inline 100 PSI Gauge
  • Aluminum Sand Tray with Vibration Isolators
  • Deluxe Dual Compartment Carry Bag
  • Dual Battery Clamps


  • The air hose supplied with this kit may become brittle from prolonged exposure to UV/sunlight.
  • Stow when not in use.
  • Never allow the hose to come into contact with the head of the compressor during use (melting hazard).
  • The use of the included air hose is not recommended in sub-zero or freezing conditions.
  • The 300P does not work with Presta bicycle valves unless used with a Presta Valve Adapter.
  • The 300P does not work with the Viair Winterization Kit (P/N 90145).


  • Brand: Viair
  • Dimensions:5.00 x 10.00 x 7.50 inches
  • Weight: 10.65 pounds
  • Power Source: Electric
  • Max. Working Pressure: 150 PSI
  • Max. Amp Draw: 30 Amps
  • Duty Cycle: 33% at 100 PSI
  • CFM Output: 2.3 CFM
  • Max Tire Recommended Tire Size: 33″
  • Power Cord Length: 8 ft.
  • Air Hose Length: 25 ft.
  • Max. Ambient Temperature: 158°F
  • Min. Ambient Temperature: 40°F
  • Motor Voltage: 12 Volt


  • 1 x Viair 300P Portable Air Compressor
  • 1 x Deluxe Zippered Carry Bag With Storage Compartments
  • 1 x 25′, 5-In-1 Inflator/deflator Open-Ended Air Hose With 120 Psi Gauge
  • 1 x Heavy Duty Sand Tray With Vibration Isolators
  • 1 x Set Of Dual Heavy Duty Direct Battery Clamps
  • 1 x 8′ Power Cable
  • 3 x Inflation Tips Kit
  • 1 x Inline Fuse Holder
  • 1 x Owner’s Manual
Weight 1 lbs