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VIAIR 440P Portable Compressor

4.7 out of 5 stars 19 customer reviews
| 4 answered questions

List Price: $295.95
Price: $276.09 & FREE Shipping. Details
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  • 12 VOLT - 150PSI Max Working Pressure, engine must be running during use.
  • 3.00CFM Free Flow @ 0 PSI
  • Portable Air Compressor comes with a canvas carrying case and powers via alligator clamps.
  • Good for up to 37 Inch Tires on Off-road vehicles
  • Comes with a coil hose with a clamp on tire chuck and gauge
24 new from $269.45 3 used from $275.95
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$276.09 & FREE Shipping. Details Only 9 left in stock (more on the way). Ships from and sold by Amazon.com in easy-to-open packaging.

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Product Information

Technical Details

Brand Viair
Item Weight 15 pounds
Product Dimensions 15 x 14 x 11 inches
Item model number 44043
Discontinued by manufacturer Yes
Exterior Painted
Manufacturer Part Number 44043
Folding No
Voltage 12 volts

Technical Specification

Additional Information

Customer Reviews
4.7 out of 5 stars 19 customer reviews

4.7 out of 5 stars
Best Sellers Rank #243,292 in Automotive (See top 100)
#231 in Automotive > Tools & Equipment > Tire Air Compressors & Inflators
#1,978 in Automotive > Wheels & Tires > Accessories & Parts > Tire Accessories & Parts
Shipping Weight 17.8 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available June 1, 2006

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.


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Product Description

Product Description

Viair 440P Portable Compressor is the largest, highest flowing portable compressor in the entire Viair portable compressor lineup. Simply attach its supplied heavy duty battery clamp power leads to the battery, and attach the lever style air chuck to a tire valve stem and turn the unit on, it can inflate up to 37 inch tires. Air pressure can be monitored using the 5-in-1 inline inflator/deflator hose and gauge included. Always turn off the unit to take an accurate pressure reading since air flow into the tire will show an inaccurate pressure reading while the unit is running.


VIAIR's 440P is the ultimate 150 PSI portable compressor kit. It can inflate a 37-inch tire from 0 to 30 PSI in less than 5 minutes. The 440P is the largest and most powerful portable compressor kit available today. Rock crawlers and semi-truckers alike will find the power of this unit irreplaceable. The kit includes a range of accessories stowable in its soft carry case, including inflation tips, a 5-in-1 inflator/deflator open ended air hose with 120 PSI gauge, dual heavy duty direct battery clamps and more.

VIAIR logo
Largest, Most Powerful Portable Compressor Kit Available
The VIAIR 440P Portable Compressor offers inflation of up to 37-inch tires at a rapid rate, and operation at up to 150 PSI for up to 15 continuous minutes at a time, providing that there are 30 minutes provided afterwards for the unit to cool sufficiently. The unit is powered by an easy to establish temporary connection to a 12-volt battery power source via included alligator clamps. The 440P comes with an open-ended tire inflation hose with included 120 PSI air pressure gauge that offers the following functions: air up, air up intermittently, air down, air down intermittently and check tire pressure. To check tire pressure, simply turn off the portable compressor to halt inflation and check the pressure on the air pressure gauge. Additional parts provided include an inline fuse holder, a 8' power cable, a heavy duty sand tray with vibration isolators and deluxe carry bag.

VIAIR 440P Portable Compressor in packaging
Portable air compression up to 150 PSI suitable for tires up to 37".
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VIAIR 440P Portable Compressor with included accessories
The largest and most powerful portable compressor kit available has all your compression needs in the bag.
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VIAIR 440P Portable Compressor with included vibration resistent tray and inline fuse holder
Heavy duty tray included for vibration control and inline fuse holder included.
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440P Air Compressor Specifications
  • Motor voltage - 12 volt
  • Motor type - Permanent magnetic
  • Max. duty cycle: 33% @ 100 PSI
  • Max. working pressure - 150 PSI
  • Max. Amp draw - 40 Amps
  • Continuous Use @ 72°F & 30 PSI - 30 min
  • Max. ambient temperature - 158°F
  • Min. ambient temperature - -40°F
  • CFM @ 0 PSI - 3.0
  • Fuse - 50 Amps
  • Inline pressure gauge - 120 PSI
  • Auto. Reset thermal protection - Yes
  • Dimensions - 13.00"L x 5.83"W x 6.69"H
  • Net weight - 13.67 lbs
About Compressor Duty Cycle
Compressor duty cycle refers to amount of time a compressor can be operated in a given time period, at 100 PSI and at a standard ambient temperature of 72°F. Duty Cycle is commonly expressed in percentile as: compressor on time (compressor on time + off time) %. As an example, a compressor that is rated for 25% duty cycle means that compressor can be operated at: 100 PSI @ 72°F for 10 minutes on and 30 minutes off. 10 min. on / (10 min. on + 30 Min. off) = 10 min. / 40 Min = 25% duty cycle.

Fill Rates:

35" x 12.5"
37" x 12.5"
0 - 30 PSI
4 min. 15 Sec.
4 min. 35 sec.
15 - 30 PSI
2 min. 15 sec.
2 min. 40 sec.

What's in the Box
  • 1-VIAIR 440P portable air compressor
  • 1-Deluxe zippered carry bag with storage compartments
  • 1-25', 5-in-1 inflator/deflator open ended air hose with 120 PSI gauge
  • 1-Heavy duty sand tray with vibration isolators
  • 1-Set of dual heavy duty direct battery clamps
  • 1-8' power cable
  • 1-3 piece inflation tips kit
  • 1-Inline fuse holder
  • 1-Owner's manual
1-Year Limited Warranty
VIAIR Corporation warrants this product, when properly installed and under normal conditions of use, to be free from defects in workmanship and materials for a period of one (1) year from its original date of purchase. This warranty covers product defects only. It does not cover incidental or consequential damages as a result of misuse or abuse.

About VIAIR Corporation
VIAIR offers the most complete line of air compressors and air accessories for both the on-and off-road markets available anywhere. VIAIR products are used in the OEM segment, 4x4 and Sport Air Suspension and have become the industry standard for both 12- and 24-volt automotive applications worldwide. Their compressors are currently being used in every corner of the globe, in the harshest climates imaginable and the company is recognized by its customers and peers alike as the leading manufacturer of high performance air compressors for mobile pneumatic applications.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
I bought this compressor so I could air my tires back up after offroading. I wont go into detail on the advantaged of doing this but theyre significant enough that I wanted to invest in a quality unit vs just getting one of those little toy cigarette lighter ones sold in most stores. I decided on the 440P vs Viair's other offerings because of the air output and i wanted something with a bit faster fill times vs a higher duty cycle or automatic shutoff. As far as the initial quality goes everything seems to be pretty well made. The way the little base attaches to the compressor itself is a little flimsy since its just 4 little rubber standoffs but I doubt they will break if I dont just beat it around. The Hose is also of pretty good quality, Better than I expected even if its the coiled type that always seems to end up tangled in a big ball after one use.

As far as using this compressor It does as advertised, runs smoothly and quietly and surprisingly has no problem pumping my 7 gallon air tank to 120PSI. I can air up my 32" tires in 13 mins from 18-50 PSI with the assistance of using the air tank as a resivoir. One thing to keep in mind is the warning stickers on "extreme heat" this thing will really cook after 10-15 mins of being on. You WILL burn yourself if you touch the metal parts. The handle insulates everything but keep it in mind. You cant just throw it back in the carry case when your done it needs to cool off. Only 4 stars because Of the price, and the amount of heat generated. So far ive put it through 6 or 7 airing up cycles so it will be intersting to see how the longevity is.
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Verified Purchase
The good news is VIAIR has a lot of compressors. The bad news is they have a lot of compressors! I researched most all of them and frankly almost over looked this one! Without writting a book I picked this one for the following. 1. 3/8 inch connectors as opposed to 1/4 inch on the other units. This allows the use of higher quality hoses etc. Note that the hose with this unit has no "stay out of sun" warnings and should not kink as others have reported. This is an emergency unit and the last thing I want in 5 years is a bad hose. I have had the "yellow" 1/4 in. hoses and they are pretty flimsy especially if bent wrong. 2. 3.0 CFM capacity is 20% to 50% above the 88p, 400p and 450p. While duty capacity is limited to 33% at the high CFM rate fill times should be very quick. I intend to use this for emergency use on small truck or car tires and want to limit exposure times on the road side. 3. Large battery clips will attach to the regular battery post without modification (unlike the 88p) and the heavy gauge wire should hold up. I have had cheap units with skinny wires and was always fearfull of breakage or pulling loose. Plus in the middle of the night or with a strange vehicle I really don't want to track down a smaller bolt somewhere to put the smaller clamps on. 4. Air Gauge reads in 2 lb. increments as opposed to 4 lb. on the other units. 5.Unit is compact and only 1" taller and about 3.5 inches wider than the 88P. Is smaller than both the 400p and 450p. 6. The 440 is 1.5 pounds heavier than the 400p and 450p and with the base should stay put while filling tires. There were some reports of the 88p falling over during use. With the sand plate this unit should slide if it moves at all. 7.Read more ›
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Verified Purchase
Chose this machine to inflate my vehicle tyres when out of reach of a tyre shop and gas station. I previously owned the smaller and cheaper models but these did not last long and took forever to inflate vehicle tyres. After searching and reading many reviews I decided on this model for its 3 cfm output and rugged design. From its 40 Amp rating I knew that it would be a robust performer. Since receiving the machine it has done minimal work. Inflated 195 x 60 x 14 and 225 x 45 x 18 tyres in little time, much faster and with much less struggle than any of my previously owned units. I would advise anyone planning to buy one of these that the external pressure tubes get extremely hot. They are exposed and not insulated. Keep children clear of this machine when operating. Allow to cool before storing away in bag provided. Bag a bit oversized and not hard lined on the inside to keep its shape. I have kept the styrofoam packing as internal bag liners. I also plan to explore the use of marine power outlets (male & female) to replace the alligator clips. These outlets I will wire directly from the battery poles (with fuse link) to an internal location. This will eliminate opening the hood each time I need to use the unit. This machine should be renamed "VIAIR 440P Portable Vehicle Tyre Compressor", as this is its primary use. Its current name gives the impression that it falls in the realm/category of compressors used in the tyre repair, cleaning, refinishing and construction industries. I will update this review in a few months.
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