VIAIR 300P
#5 in Heavy dutyFull review
For truck, Jeep and SUV owners who air down on weekends and want a proven compressor at a sensible price. Bigger tires or long sessions call for a 400P or 450P.
Amazon $158.06 VIAIR $149.95$149.95
3.1/5
For off-roaders on 33 to 35 in tires who air down regularly and want quicker, longer runs than a 300P without paying for a twin. It is the sweet spot of VIAIR’s portable line.
- Battery clampsPower
- 150 PSIMax pressure
- 73 L/minAirflow
- NoAuto shutoff
- 1 yearWarranty
Check price at Amazon$252.04
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Airs a 35 in tire up from 10 to 40 PSI in about 5 minutes
- Runs about an hour straight at trail pressures
- Quieter than older VIAIR portables
- SAE plug works with battery clamps or a trailer-plug adapter
Cons
- No auto shutoff: you watch the inline gauge
- Short 6 ft power lead keeps it near the battery
- Only a one-year warranty at this price
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | 40143 |
|---|---|
| Inflating | |
| Max pressure | 150 PSI |
| Airflow (maker) | 73 L/min |
| Auto shutoff | No |
| Duty cycle | 60 min on |
| Noise | 73 dB |
| Power | |
| Power | Battery clamps |
| Power bank | No |
| Power cord | 6 ft |
| Build | |
| Air hose | 300 in |
| Light | No |
| Dimensions | 10.9 x 5.8 x 7.4 in |
| Weight | 10.3 lb |
| Warranty | 1 year |
Alternatives in this type
VIAIR 88P
#6 in Heavy dutyFull review
For car, SUV and light-truck owners who want a sturdier, battery-powered alternative to a socket inflator for the trunk. Off-roaders airing up 33 in tires should step up to a 300P or 400P.
Amazon $89.89$89.89
ARB CKMP12 Portable (V2)
#8 in Heavy dutyFull review
For overlanders who value ARB’s durability, case and three-year warranty over raw speed. Buyers chasing airflow per dollar will do better with a VIAIR 400P EF.
Amazon $487$487
Compare
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