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VIAIR 400P - 40045 Automatic Tire Inflator Portable Offroad Air Compressor for Truck & SUV | 12V On/Off Road Tire Pump Air Compressor Portable Heavy Duty 150 PSI, up to 35" Tires, Alligator Clips

4.8 4.8 out of 5 stars 1,239 ratings
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Purchase options and add-ons

Brand VIAIR
Voltage 12 Volts
Power Source Battery Powered
Noise Level 74 dB

About this item

  • HIGH PERFORMANCE *AUTOMATIC* OFFROAD COMPRESSOR (Model: 40045, 12V, 150 PSI, 35" Tires) - The 400P Portable Truck Air Compressor is 12V heavy-duty electric air compressor for offroad enthusiasts. Set your desired pressure and the compressor will shut off automatically when pressure reaches the set point. Its powerful, direct drive gearless motor and maintenance-free operation are perfect for tackling tough terrain. Ultra-compact and storable in its own carrying case.
  • HIGH PERFORMANCE OFFROAD COMPRESSOR (Model: 40043, 12V, 150 PSI, 35" Tires) - The 400P Portable Truck Air Compressor is 12V heavy-duty air compressor for offroad enthusiasts. Its powerful, direct drive gearless motor and maintenance-free operation are perfect for tackling tough terrain. Ultra-compact and storable in its own carrying case, it's an essential tool for any off-road adventure, combining reliability with convenience.
  • INCLUDED COMPONENTS: 12V mini air compressor tire inflator has a 25 ft 5-in-1 inflator/deflator air hose with inline 100 PSI gauge, 8 ft power cord, deluxe dual-compartment carry bag, 3 inflation tips (3/16" nozzle, 5/16" nozzle, and needle adapter), and Presta Valve Adapter. Features: Aluminum I-Beam sand tray, thermal overload protector, 40-Amp inline fuse holder, press-on tire chuck.
  • HIGH CAPACITY SPECS for LARGE TIRES: Powered by 12 volts, this small but mighty electric air compressor with a permanent magnetic motor delivers a maximum working pressure of 150 PSI with a 33% duty cycle @ 100 PSI; Free flow capacity: 2.3 CFM. Maximum Recommended Tire Size: 35". Fills a 35" tire from 15 to 30 PSI in 2 min. 45 sec or less. IP54 rating protects against dust and water spray from any direction. Dimensions: 10.87″L x 5.83″W x 7.48″H; 10.70 lbs.
  • DEPENDABLE QUALITY: VIAIR offroad compressors offer you the freedom to explore further and challenge boundaries. For over 25 years, our American owned and operated company has provided top-quality portable air compressors & inflators. Our commitment to durability, continuous testing, and refinement results in long-lasting performance.
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VIAIR 400P - 40045 Automatic Tire Inflator Portable Offroad Air Compressor for Truck & SUV | 12V On/Off Road Tire Pump Air Compressor Portable Heavy Duty 150 PSI, up to 35" Tires, Alligator Clips
VIAIR 400P - 40045 Automatic Tire Inflator Portable Offroad Air Compressor for Truck & SUV | 12V On/Off Road Tire Pump Air Compressor Portable Heavy Duty 150 PSI, up to 35" Tires, Alligator Clips
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Price-7% $277.89
List:$299.95
$354.95-14% $232.19
List:$269.95
$189.99$159.99$349.95
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Easy to use
4.8
4.7
4.4
4.5
4.7
Accuracy
4.6
4.6
4.0
4.3
4.6
Value for money
4.7
4.4
4.3
Easy to read
4.8
4.5
4.8
Sold By
Amazon.com
Amazon.com
Amazon.com
ALL-TOP
ALL-TOP
Amazon.com
capacity
2.3 cubic feet
33 inches
16 liters
1.8 cubic feet
power source
Battery Powered
Battery Powered
12v Battery (Alligator Clamps or Ring Terminals)
Corded Electric
Corded Electric
Battery Powered
air flow capacity
2.3 cubic feet per minute
1.8 cubic feet per minute
2.3 cubic feet per minute
6.36 cubic feet per minute
3 cubic feet per minute
voltage
12 volts
12 volts
12 volts
12 volts
12 volts
12 volts
maximum power
360 watts
0.2 horsepower
0.2 horsepower
317 watts
maximum current
30 amps
20 amps
44 amps
noise level
74 decibels
69 decibels
73 decibels
74 decibels
78 decibels
69 decibels

From the brand

Product Description

Product Description

The VIAIR 400P AUTOMATIC 12 Volt Portable Air Compressor for Truck Tires The 400P tire pump for trucks, SUVs, RVs and more is portable, lightweight, and has an automatic shut-off setting. With a maximum dimension of 10.87 inches and weight of 10.7 pounds, it's easy to store in your trunk or top box for easy access and never be without air. Electric Truck Tire Pump with Carrying Case Conveniently stored in a durable canvas carrying case with top handle, the 400P tire inflator air compressor is ready to use at any moment, whether you're at home, stopped on a busy roadway or out in the middle of nowhere. Compatible with All Vehicles From trucks and SUVs, to motorcycles and side-by-sides, this small air compressor is portable and powerful. Filling a 35-inch tire from 15 to 30 PSI in less than 2 min 45 sec or less, the 400P gets you back on the road in minutes, no matter what rig you drive. Fast & Easy to Use – No Programming Required Attach the alligator clips to your vehicle's battery terminals, start your engine, turn the compressor on and it will pressurize the hose to 150 PSI and turn off. Connect the air hose to your vehicle's tire, and start filling with air by pulling the trigger on the inflation gun. From Road to Trail VIAIR's battery powered air compressor pumps are loved by daily commuters, families, and extreme off-road enthusiasts alike for their powerful, reliable performance in a small package. 12V Battery Clamps for Higher Performance Offroading applications have higher performance demands that cigarette lighter plugs are unable to meet. Enthusiasts prefer direct battery connections for their trucks, Jeeps and 4x4s because it accommodates the increased current draw of larger, more powerful compressors. While VIAIR does offer cigarette lighter models, we recommend compressors with battery clamps for serious for offroad use.

Amazon.com

The 400P Automatic is VIAIR's first Automatic shutoff function portable compressor. Powered by an easy-to-establish temporary connection to a 12-volt battery power source, this 33% duty cycle unit is capable of pressures up to 150 PSI and can be operated for up to 40 minutes at a time before needing to be rested. The 400P Automatic comes with a range of accessories stowable in its soft carry case, including a convenient close-ended gas station-style air gun. .caption { font-family: Verdana, Helvetica neue, Arial, serif; font-size: 10px; font-weight: bold; font-style: italic; } ul.indent { list-style: inside disc; text-indent: -15px; } table.callout { font-family: verdana; font-size: 11px; line-height: 1. 3em; } td.vgoverview { height: 125px; background: #9DC4D8 url(https://images-na.ssl-images-amazon.com/images/G/01/electronics/detail-page/callout-bg.png) repeat-x; border-left: 1px solid #999999; border-right: 1px solid #999999; padding-left: 20px; padding-right: 20px; padding-bottom: 10px; width: 250px; font-family: verdana; font-size: 12px; }

Portable Automatic Compression up to 150 PSI
The VIAIR 400P-Automatic Portable Compressor offers inflation of up to 35-inch tires, 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. More than just a compressor, the 400P is a complete portable compression system, coming complete with an inflation gun with 200 PSI air pressure gauge, a 25' extension hose with quick connect coupler and lever chuck, a heavy duty sand tray with vibration isolators, a 8' power cable, a heavy duty sand tray with vibration isolators, a 3-piece inflation tips kit, an inline fuse holder, a deluxe zippered carry bag and dual heavy duty direct battery clamps. The convenient battery clamps allow you to quickly utilize any 12-volt power source, including your own vehicle's battery, to address your air compression needs in seconds.


Portable air compression up to 150 PSI suitable for tires up to 35".
View larger.
All your compression needs are in the bag.
View larger.
Heavy duty tray included for vibration control.
View larger. The 400P also contains a convenient automatic time and power-saving features. The unit comes with an automatic shutoff function that will power down the 400P when the compressor is turned on, but not actively filling tires - making it unnecessary to turn the unit off between tire fills. In addition, the included closed-ended tire inflation gun allows for on-the-fly tire pressure reading, without having to turn the unit off to check tire pressure.

400P 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 - 30 Amps
  • Max. ambient temperature - 158°F
  • Min. ambient temperature - -40°F
  • CFM @ 0 PSI - 2.54
  • Built-in pressure switch - 120 PSI on, 145 PSI off
  • Fuse - 40 Amps
  • Auto. Reset thermal protection - Yes
  • Dimensions - 11.25"L x 4.00"W x 7.00"H
  • Net weight - 8.50 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:
31" x 10.5" 33" x 12.5" 35" x 12.5" 0 - 30 PSI 2 min. 28 sec. 4 min. 4 min. 50 sec. 15 - 30 PSI 1 min. 25 sec. 2 min 2 min. 20 sec.
What's in the Box

  • 1-VIAIR 400P portable air compressor
  • 1-Deluxe zippered carry bag with storage compartments
  • 1-Gas station style inflation gun with 200 PSI air pressure gauge
  • 1-25' extension hose with quick connect coupler and lever chuck
  • 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.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF ]

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VIAIR

VIAIR 400P - 40045 Automatic Tire Inflator Portable Offroad Air Compressor for Truck & SUV | 12V On/Off Road Tire Pump Air Compressor Portable Heavy Duty 150 PSI, up to 35" Tires, Alligator Clips


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What's in the box

  • 12v Portable Compressor
  • 30ft inside braided coil hose
  • 160 PSI Tire Inflation Gun
  • 3 Pc inflation tips kit
  • Presta Valve Adapter
  • Product guides and documents

    Looking for specific info?

    Customer reviews

    4.8 out of 5 stars
    4.8 out of 5
    1,239 global ratings

    Customers say

    Customers like the quality, performance, versatility, and noise of the air compressor. For example, they mention it's well built, works beautifully, and is great for offroading. They appreciate the efficiency, saying it does a good job of quickly getting tires up to 36 lbs. Customers are also happy with value, ease of use, and compactness.

    AI-generated from the text of customer reviews

    115 customers mention105 positive10 negative

    Customers are satisfied with the quality of the air compressor. They mention that it is well built, reliable, and gets the job done. The carrying bag is heavy duty and well designed. Overall, customers are happy with their purchase and recommend it to others.

    "...The bag is extremely nice! Very rugged, and well balanced. The compressor seems very secure in the bag, and the hose fits perfectly up front...." Read more

    "...be great if I could plug it in to a wall receptical because it is so handy, quick and easy to use...." Read more

    "...Anyway to get to the point, I bought this one because of the quality, the standard quick connect fittings and most importantly, the trigger to start..." Read more

    "...the carry case is well designed and appears to be fairly rugged...." Read more

    100 customers mention94 positive6 negative

    Customers are satisfied with the performance of the air compressor. They mention that it works beautifully, has great functionality, and control. They also say that it's great for off-roading, has a nice big gauge, and operates on demand. Overall, customers are happy with their purchase and recommend it to others.

    "...All went together well, but threads on air filter were kinda rough, added a VERY thin coat of light Yamaha lube and it smoothed out and all..." Read more

    "...I then inflated it to 36psi in less than a minute. The compressor worked beautifully...." Read more

    "...It works great, I just like the service station type valve better. Maybe it could be changed out later I guess...." Read more

    "I've had a Slime brand air compressor for years and it works well. However, it's loud and takes forever to air up my 32" truck tires...." Read more

    87 customers mention87 positive0 negative

    Customers appreciate the versatility of the air compressor. They say it's well built, quiet, and easy to use. Some mention it'll be the best air pump they've ever used.

    "...I have a 2015 Jeep Wrangler Unlimited. This is a perfect compressor for my needs. It is extremely easy to set up and light to carry...." Read more

    "...I would recommend buying from this manufacturer. The unit seems of very good and solid quality...." Read more

    "...testing this pump was honestly VERY impressive. my tires are 305/65/15's it took just under 4min to take the tire from about 15psi to 65psi...." Read more

    "...This Viair is NICE. It's quiet and I like the automatic shutoff...." Read more

    56 customers mention50 positive6 negative

    Customers like the efficiency of the air compressor. They say it does a good job of quickly getting their tires up to 36 lbs, and it operates smoothly and quickly. They mention that each tire takes under 2 minutes to air up, and that it's a time-saver.

    "...The compressor is quiet and quick. Using the release valve in the gun, I deflated a tire to 20psi (very quickly, great valve)...." Read more

    "...if I could plug it in to a wall receptical because it is so handy, quick and easy to use...." Read more

    "...So the quick rundown: it works really fast, it's not crazy loud, and the air hose reaches all the tires on my truck, so absolutely no complaints...." Read more

    "...Each tire takes under 2 minutes, which is not bad at all. Keep the engine running for the higher voltage and it perfect...." Read more

    54 customers mention38 positive16 negative

    Customers like the value of the air compressor. They say it's well worth the money, has a great price, and the attachments are worth the extra charge.

    "...It's worth the bucks for something built well and efficient. The pressure was accurate, but I have a separate gauge to double check." Read more

    "...Very pleased. It is a little expensive, but worth it." Read more

    "...portable 12V pump out there with the specs this one has that's worth the money...." Read more

    "...The only negative is the chuck part, it is useless and you have to get a decent one so it stays connected to the valve stem, the one provided does..." Read more

    53 customers mention45 positive8 negative

    Customers like the noise level of the air compressor. They say it's surprisingly quiet and there's no hissing of air at all.

    "...Unit is quiet and seem very well built, time will tell how it holds up...." Read more

    "...The compressor is quiet and quick. Using the release valve in the gun, I deflated a tire to 20psi (very quickly, great valve)...." Read more

    "...So the quick rundown: it works really fast, it's not crazy loud, and the air hose reaches all the tires on my truck, so absolutely no complaints...." Read more

    "...The pump is amazingly quiet. i was easily able to talk with my wife right next to the pump without shouting...." Read more

    47 customers mention47 positive0 negative

    Customers find the air compressor easy to use. They mention it operates smoothly, it's easy to put on, and the step up is super easy. They also appreciate the auto feature and the easy to operate controls. Customers also mention the black hose is easy to work with and durable. They say it'll be more convenient than gas stations and has standard quick connect fittings.

    "...It is easy to put on, contains a 2 part filter already, and has two spare filter sets in a separate bag...." Read more

    "...plug it in to a wall receptical because it is so handy, quick and easy to use...." Read more

    "...the point, I bought this one because of the quality, the standard quick connect fittings and most importantly, the trigger to start and stop the air..." Read more

    "...with Gauge and Braided Hose, for example, because I find it easier to use. I might add a better hose, etc...." Read more

    41 customers mention37 positive4 negative

    Customers like the compactness of the air compressor. They mention that it's relatively small, and very efficient. It's easy to set up and light to carry, and fits the bill perfectly. Customers also say that it feels heavy duty but is not obnoxiously heavy.

    "...invest, this unit seems like the best option for quick air up and compact size / low weight...." Read more

    "...It is extremely easy to set up and light to carry...." Read more

    "...The triggle with the guage on it is quite nice and heavy and better than I thought it would be...." Read more

    "...It comes with a heavy duty, right-sized canvas carrying bag which is just indicative of the overall quality of the product...." Read more

    Great air pump, just be careful. Hot!
    4 Stars
    Great air pump, just be careful. Hot!
    It's working great for offroading. Pumps up my set of 33s from 20psi and 30psi to 45 and 55 respectively in roughly 10 mins. Seems well built, comes with everything you need and the bag is ok.Two things to be aware of;1) the pressure garage doesn't give you a real time readout. You have to release the trigger and some times tap the air release button to get the true psi.2) this thing gets extremely hot. I accidently burnt myself on the mosfet reaching over the pump for something and I now have 7 burn lines on my arm after a split second touch. It's my fault I know, but just be very careful around it. Knocked a star off purely for the temperature and risk.
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    Top reviews from the United States

    Reviewed in the United States on October 6, 2018
    3 people found this helpful
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    Reviewed in the United States on January 9, 2017
    60 people found this helpful
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    Reviewed in the United States on October 2, 2010
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    Top reviews from other countries

    Andre
    5.0 out of 5 stars Great portable 12 volt compressor
    Reviewed in Canada on September 15, 2021
    One person found this helpful
    Report
    Igor
    5.0 out of 5 stars Very easy to use, quality product
    Reviewed in Canada on March 23, 2022
    KJ
    5.0 out of 5 stars VIAir Quality Product
    Reviewed in Canada on April 20, 2023
    Grey Wolf
    5.0 out of 5 stars Great little pump!
    Reviewed in Canada on April 1, 2023
    Ken-Porter
    4.0 out of 5 stars High performance air pump.
    Reviewed in Canada on September 15, 2019