VIAIR 300P Portable 12V Tire Inflator for Trucks & SUVs — 150 PSI, 5‑in‑1 Gauge

The VIAIR 300P is a 12‑volt portable tire inflator that delivers up to 150 PSI and is built to inflate truck and SUV tires (up to 33" diameter) quickly and reliably.

Compact and purpose‑built, the VIAIR 300P compressor kit is a roadside-ready air pump for drivers who need dependable tire inflation away from service stations. The unit runs from your vehicle battery via heavy‑duty clamps, includes an inline 5‑in‑1 tire pressure gauge, and stows in a deluxe dual‑compartment carry bag for easy transport. With a permanent magnetic motor and a design tuned for heavy vehicles, this inflator balances power with portability for on‑the‑go inflation.

How do I use the 300P safely and quickly?

Operation is straightforward: attach the power leads to your battery, connect the chuck to the tire valve, and switch the compressor on while your vehicle engine is running. Monitor pressure with the included 5‑in‑1 inflator/deflator gauge after turning the unit off to avoid overinflation.

• Attach red/black clamps to battery terminals for secure power connection.
• Connect the tire chuck to the valve stem and make sure the seal is firm.
• Run vehicle engine while using the compressor to maintain power supply.
• Use the inline gauge to check and adjust pressure once compressor stops.

What performance can I expect for trucks, SUVs, and off‑road tires?

The VIAIR 300P is rated for a 150 PSI maximum working pressure and supports tire diameters up to 33 inches, making it suitable for many trucks, jeeps, and SUVs. Its free flow capacity of 2.30 CFM provides efficient air delivery for mid‑sized tires, and the motor draws approximately 27 amps during operation.

• Maximum working pressure: 150 PSI for high‑pressure applications.
• Free flow: 2.30 CFM to move air effectively into larger tires.
• Duty cycle: 33% at 100 PSI—use in short intervals to avoid overheating.
• Recommended for tires up to 33" overall diameter on trucks and SUVs.

What accessories and features are included in the kit?

The compressor arrives as a full kit so you can tackle common inflation tasks immediately. It comes with heavy‑duty battery clamps, the 5‑in‑1 inflator/deflator inline gauge for pressure checks, and a deluxe dual‑compartment carry bag for neat storage and transport.

• Deluxe dual‑compartment carry bag to organize compressor and fittings.
• 5‑in‑1 inline tire pressure gauge for easy pressure checks and adjustments.
• Durable power leads with clamps for reliable battery connection.
• Compact compressor housing designed for vehicle storage or trunk mounting.

How should I maintain and protect the compressor for long life?

Use the compressor in short cycles and allow cooling between runs—its 33% duty cycle at 100 PSI means prolonged continuous use can overheat the motor. Keep the unit and fittings clean and dry, store in the provided carry bag, and inspect clamps and hoses before each use.

• Use in short bursts; let the unit cool to respect the duty cycle.
• Store in the dual‑compartment bag to protect from dirt and moisture.
• Check clamps, hoses, and the inline gauge for wear before use.
• Run the vehicle engine while inflating to ensure stable power delivery.

Who this is for: drivers of trucks, SUVs, jeeps, and off‑road vehicles who want a compact, battery‑powered inflation solution capable of servicing tires up to 33" diameter. The VIAIR 300P is designed for people who need a professional‑grade, portable compressor that balances airflow, pressure capability, and on‑the‑road convenience without relying on gas‑station pumps.