VIAIR 400P Portable Compressor Kit - 40043

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  • VIAIR | Part Number: V/A40043
  • Duty Cycle:33 Percent @ 100 psi
  • Maximum Air Pressure:150 PSI.
  • Amp Draw:16 to 25 Amps
  • Voltage:12 Volt
  • Fitment:Universal Fit


The 400P Portable Air Compressor is the most powerful portable compressor in the VIAIR lineup and is designed to fill 35 tires from 15 to 30 PSI in just over two minutes. Kit includes compressor, 8 foot power cord with battery clamps, 35 foot coiled hose, and a water resistant double compartment carrying bag.


Slower than expected but still very good

I got this to air up tires after offroading. I should have bought the 400c or something like that, since I decided to hardmount it. Expect to end up replacing the hose eventually if you plan to use it in the winter. The tire fill chuck that came with it would not fit happily on my factory wheels, it doesn't do well in recessed areas. Overall, very good for tires, though not as fast as I had hoped. I plan to re-work the wiring, it may have a weak ground.

from Edmonton, AB |
400P Compressor

Faster than anticipated at filling big tires

from Phoenix, AZ |
400P Portable Compressor by Viair

I plan to use this compressor to air up my Dodge Ram 2500 4x4 tires which I do not 4-wheel when I have a flat or putting the camper on the truck. I do have a compressor in my '85 Toyota 4x4 but it isn't always around. It is a good little compressor and fills my needs. I am not able to say that it is reliable or is able to withstand use because I have not had it or used it for a long enough period of time.

from Running Springs, CA |
Great product

Great product. My only compliant would be that on my vehicle I had a hard time reaching ny driverside rear with the air hose. I would recomend longer battery cables or hose.

from Pilot Rock, Oregon |
Pump it up!

This pump works great. I have used it to pump up motorcycle tires, car and truck tires as well as high pressure bicycle tires up to 120psi! It works just like a good pump should, fast and efficient. I keep it in my Jeep at all times and find myself using it for everything. Pricey, but you pay for quality and that's what you get with this pump, high quality!

from San Diego, CA |
Viar 400p portable compressor

I've been researching a compressor to get for the trail for some time and found a good friend has had one of these for about two years without any problems.I used his to air up several times and was very impressed so that led me to purchase my own.

from Stow, Ohio |
Review of 400P Portable Compressor

I bought this product for my Evo 9 but since I also had a truck I bought the heavier duty compressor for more versatility.

from Rowland Heights, CA |
Review of 400P Portable Compressor

I bought this product for my EVO 9 but since I also own a truck I got the heavier duty compressor for more durability.

from Rowland Hts., CA |
great product

use it when wheelin to inflate after!

from San Diego, Ca |
I would buy this product again

this is a great product, i even used it once to fill a 5' tall tractor tire and it did not take very long. I use it mostly for my pick up and i am running 38.5 boggers.

from Nampa ID |

Question & Answers

1 Answered question

what is the base measurments..will it fit on my spair battery plate on the right side of my 2003 rubicon?

Asked by wknwood from slc ut on

Thanks or the question wknwood. V/A40043 ,400P Portable Compressor Kit Here are the dimensions for the compressor by itself, 10.87" long 5.83" wide 7.48" tall Just by looking at the size I think it will fit, but you might want to measure to make sure. Here is a link to the picture and dims. Thank you Answer box sales

Answered by from slc ut on


When you're looking for compressors and air accessories for the off-road market, VIAIR is a vital air source for Jeeps running onboard air systems or portable compressors. 4WD has an extensive lineup of VIAIR products and accessories like pressure gauges, air filters and airline fittings. Operate air tools, inflate intertubes, balls and other sports gear, and of course, re-inflate tires after a day on the trails with reliable VIAIR products. Compressors draw various amps with different PSI working pressures to fill bigger tires quickly and hassle-free. VIAIR's constant duty onboard air system for Jeeps offers a 100% duty cycle with all the necessary components to keep your wheeling adventures aired-up and safe. Shop VIAIR Now


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