The 24V setup that decides the fit
The VIAIR 400P runs on 24 volts, so it suits vehicles with a 24V electrical system. That one spec decides whether this compressor belongs in your kit, because the dual battery clamps connect straight to the battery rather than an accessory socket.
Our advice: confirm your voltage before you weigh the price. The package supplies both clamps and a 40-amp inline fuse holder, so the connection is part of what you are buying, not an add-on.
| Product detail | Value to match to your vehicle |
|---|---|
| Product | VIAIR 400P |
| Model | 400P |
| Color | Silver |
| Size | 24V |
What it will not do
This is an inflation tool, not a repair or diagnostic device. It will not seal a puncture, find a slow leak or clear a tire pressure warning light.
It fills tires to a target pressure and can deflate them through the 5-in-1 hose. If your goal is troubleshooting a sensor fault, this compressor is the wrong tool.
Fills and deflates tires, nothing more
No leak sealing, no code clearing
The price and what it compares to
- Amazon price
- $289.99
- Customer rating
- 4.5
- Customer reviews
- 32
- Typical price over 90 days
- $360.62
- Difference
- $70.63 (20 percent)
At $289.99, this VIAIR 400P sits below the typical price of $360.62 over the last 90 days, a savings of $70.63. That works out to 20% against the usual going rate.
The listing shows 4.5 stars from 32 reviews. The gaps between typical and current are what you are judging here, not a claim about the absolute floor.
Power and mounting checks before you buy
Plan the cable route before the box arrives. The clamps reach your battery terminals, and the 40-amp inline fuse holder needs a spot where the wiring will not rub or sit against hot surfaces.
The 5-in-1 hose carries an inline 100 PSI gauge, so check that this pressure range covers the tires you plan to fill. The kit also includes three inflation tips for other inflatables.
Decide where the diamond-plate sand tray will ride, since it is built to resist vibration but still needs a place where it will not slide around while you drive.
Who should choose or skip this inflator
Choose the VIAIR 400P if you run a 24V truck or SUV and want direct battery power, an inline 100 PSI gauge and a tray that tolerates vibration. It suits drivers who already expect to clamp to a battery rather than plug into a socket.
Skip it if your vehicle uses a different voltage system or you want to power the pump from an accessory outlet. The voltage requirement does not change with the discount.
Specifications
| Model | 400P |
|---|---|
| Color | Silver |
| Size | 24V |