VIAIR 400P Portable Compressor Kit - 40043

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



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.

Air is a powerful and useful tool when working with automotive equipment, but it is a lifesaver when you are facing a flat tire. With a VIAIR 400p portable compressor, you open up a range of possibilities for on-demand air regardless of where you are. Because of the small size and how easy it is to move from job site to car or anywhere else, portable compressors are a favorite of handymen, DIY mechanics, and anyone else who likes to tinker.

A Pump in a Pinch
The VIAIR compressor 400p is really valuable when you find yourself stranded on the side of the road with a flat tire. This kit comes with an eight-foot power cord that connects to your vehicle's battery. So long as your car has life, your compressor will inflate a 35-inch tire in less than three minutes. Though the power cord is eight feet, the hose itself is 25 feet long. It's perfect for roadside use or around the garage.

Powerful Pressure
In spite of the compact size, this air compressor wheel kit puts out a maximum air pressure of 150 psi. Whether you need to fill up a bike tire or the spare you just pulled off the back of the trailer, this is the pump for you. Complete with a durable, waterproof carrying bag, you have all the air you need when you order a VIAR compressor from 4 Wheel Parts.

Customer Reviews

5.0 5.0
1 Customer ratings

Customer Images

1.0 Crap

25 minutes on this little 14” trailer tire. Would worry about airing down my 35” tires and waiting for this to fill? Use twice?

from Stockton, CA |
25 minutes still not full?
The little pump that couldn’t?
5.0 portable compressor

worked great!!!!!!!!!!!!!!..........................

from Castaic, CA. |
5.0 Good product

I bought this product but ended up returning it. The 400 P worked great but you have to have it turned off connect air hose and then turn on. It begins to fill immediately, which can be problematic when filling air suspension. I immediately bought the 400P-automatic and can say that is 5 stars and worth the extra money for the convenience of being able to control the air flow at the tire instead of either disconnecting the chuck or turning the compressor off.



Question & Answers

3 Answered questions

Q: Dies this compressor also use 110 power or cigarette lighter power? Answer this question

A: 12v “cigarette lighter” power. 

Answered by K.C. “the wonder drummer” from San Bernardino, CA on 09/20/2020

A: Only powered with the supplied battery clamps.    

Answered by LarryC from Phoenix on 09/20/2020

Q: What is the CFM of this compressor? Answer this question

A: 150 PSI / 2.30 CFM

Answered by Kelly from 4WP Corporate Headquarters on 11/05/2020

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

A: 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 RK on 10/09/2014


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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