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VIAIR 400P - 40043 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

4.7 4.7 out of 5 stars 1,535 ratings

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Purchase options and add-ons

Brand VIAIR
Voltage 12 Volts
Power Source electric-powered
Noise Level 74 dB

About this item

  • HIGH PERFORMANCE OFFROAD COMPRESSOR (Model: 40043, 12V, 150 PSI, 35" Tires) - The 400P Portable Truck Air Compressor is 12V heavy-duty electric 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.
  • EXPLORE WITHOUT LIMITS: Trucks, SUVs, Jeeps, Offroad Vehicles, 4x4s, Side-by-Sides, RVs, Motorcycles, Road Bikes & Mountain Bikes. *Instructions: Attach the battery clamps to your vehicle’s battery and start the engine. Connect to a valve stem and turn the unit on. When required, use the included bicycle Presta valve adapter.
  • 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; 10.40 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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Product Description

Product Description

The VIAIR 400P (40043) - 12 Volt Portable Air Compressor for Truck Tires Enjoy peace of mind everywhere you go. The 400P tire pump for trucks, SUVs, RVs and more is portable and lightweight, with a maximum dimension of 10.87 inches and weight of 10.4 pounds. Store it 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 portable air compressor for truck tires 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 tire pump with pressure gauge is portable and powerful. Fills a 35" tire from 15 to 30 PSI in 2 min. 45 sec or less, the 400P gets you back on the trail 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, connect the air hose to your vehicle's tire, and power on the unit. The 400P relies on a simple On/Off switch. Simply monitor the pressure gauge and fill to your desired pressure. 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.

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VIAIR's 400P is a larger portable compressor kit that is capable of inflating up to 35-inch tires from 0 to 30 PSI in less than 5 minutes, with a maximum working pressure of 150 PSI and a maximum duty cycle of 33%. The unit features a low power draw, provided by any available 12-volt battery. Used and approved of by off road enthusiasts worldwide, the 400P can save you when you're miles from home. Accessories supplied in this compression system include a zippered soft carry case, inflation tips, a 5-in-1 inflator/deflator open ended air hose with 100 PSI gauge, dual heavy duty direct battery clamps and more. .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 air compression up to 150 PSI suitable for tires up to 35".
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All your portable compression needs are in the bag.
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Heavy duty tray included for vibration control.
View larger. Portable Compression Stowed for the Road
The VIAIR 400P Portable Compressor offers inflation of up to 35-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 400P comes with an open-ended tire inflation hose with included 100 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.

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
  • Inline pressure gauge - 100 PSI
  • 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 00 sec. 4 min. 50 sec. 15 - 30 PSI 1 min. 25 sec. 2 min 00 sec. 2 min. 20 sec.
What's in the Box

  • 1-VIAIR 400P 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.

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 - 40043 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
  • 25ft Inside Braided 5-in-1 Inflator/Deflator Air Hose with Inline 100 PSI Gauge
  • 3pc Inflation Tips Kit
  • Presta Valve Adapter
  • Deluxe Dual Compartment Carry Bag
  • Product guides and documents

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    VIAIR 400P - 40043 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 - 40043 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$239.95$113.74-9% $159.90
    List:$174.95
    -6% $159.99
    Typical:$169.99
    -15% $229.46
    List:$269.95
    $354.95
    Delivery
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Customer Ratings
    Easy to use
    4.5
    4.7
    5.0
    4.7
    Value for money
    4.4
    3.0
    4.2
    4.7
    Accuracy
    4.3
    4.4
    4.3
    4.6
    Sold By
    Amazon.com
    Amazon.com
    JACO Superior Products
    keenstone
    Amazon.com
    Amazon.com
    capacity
    2.3 cubic feet
    50 liters
    33 inches
    power source
    electric-powered
    Corded Electric
    Corded Electric
    Corded Electric
    12v Battery (Alligator Clamps or Ring Terminals)
    Battery Powered
    air flow capacity
    2.3 cubic feet per minute
    3.5 cubic feet per minute
    200 liters per minute
    2.3 cubic feet per minute
    1.8 cubic feet per minute
    voltage
    12 volts
    120 volts
    12 volts of direct current
    12 volts
    12 volts
    12 volts
    maximum power
    414 watts
    2 watts
    396 watts
    0.2 horsepower
    maximum current
    30 amps
    33 amps
    20 amps
    noise level
    74 decibels
    14.4 decibels
    72 decibels
    65 decibels
    73 decibels
    69 decibels
    hose length
    25 feet
    25 feet
    25 feet
    25 feet

    Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    1,535 global ratings

    Customers say

    Customers like the quality, performance, size and value of the air compressor. For example, they mention it's reliable, works fast and is easy to carry around. Some appreciate the carry bag and say it'll inflate tires in no time. Overall, most are happy with their purchase and recommend it to others.

    AI-generated from the text of customer reviews

    307 customers mention260 positive47 negative

    Customers like the quality of the tools. They mention that it is much more heavy-duty than their previous portable, reliable, and efficient. They also appreciate the good quality battery leads and clamps, and the nice material of the bag. Customers are also impressed with the performance and pleased with the results.

    "...It's a reliable and efficient companion for any outdoor enthusiast, providing peace of mind and timely inflation whenever and wherever you need it...." Read more

    "...The hose is long enough in addition to the long battery cables. Nice carry case too, that will fit a set of Coyote automatic deflators..." Read more

    "...travel trailer tire as soon as I received the unit and was pleased with the results. It inflated the tire to 55psi in about 3 minutes...." Read more

    "Quiet strong and fast to raise pressure. Worth the price if you need more than the typical 35psi." Read more

    90 customers mention84 positive6 negative

    Customers like the inflation of the tire inflator. For example, they mention it deflates and inflate quickly, it's simple and relatively quick, and it fills tires quickly. Some say the airing up process is quick and problem free. Overall, most are satisfied with the performance of this tool.

    "...companion for any outdoor enthusiast, providing peace of mind and timely inflation whenever and wherever you need it...." Read more

    "...(which makes the air-down job incredibly easy and fast and accurate to whatever you choose for a preset..." Read more

    "...Pressure gauge was within 2 psi of stand-alone gauge. Deflation feature worked well, but feels a little under-designed...." Read more

    "Inflates well. Heavy. Just beware of duty cycle. All pumps get hot and need time to cool down" Read more

    78 customers mention58 positive20 negative

    Customers like the performance of the air compressor. For example, they say it's fast, quiet, and high performance. Some mention that it inflates motorhome tires to 80 PSI quickly and that it saves time.

    "...(which makes the air-down job incredibly easy and fast and accurate to whatever you choose for a preset deflation limit)...." Read more

    "Quiet strong and fast to raise pressure. Worth the price if you need more than the typical 35psi." Read more

    "...Worked REALLY fast when we had a tire on our loaded cargo trailer that kep losing pressure." Read more

    "...to the valve tire is with a 90 degree angle which makes it really hard to connect as it needs to be flush with the tire rim...." Read more

    66 customers mention57 positive9 negative

    Customers like the size of the compressor. For example, they mention it's portable, extremely compact, and easy to carry around. That said, some are impressed with the carry bag. Overall, customers are happy with the size and performance of the product.

    "...for the 400P. Its compact size and ergonomic handle made it a breeze to carry around, and the included carry bag added an extra layer of convenience...." Read more

    "...Portable, small footprint, and very well built. Worth it. Don't go offroad without it." Read more

    "...The removable air hose is coiled and compact and easily stretched out from the front of my 38' RV to the rear tires...." Read more

    "...This will probably be the last one I ever buy. It is well made, rather heavy compared to the compressors I used before, and has a bag and hose that..." Read more

    52 customers mention46 positive6 negative

    Customers like the value of the tools. They say it's a great product for the money, a solid value, and a good investment. Some say that the product is easy to use and has a reasonable bag and hose. Overall, most are happy with their purchase and recommend it to others.

    "Quiet strong and fast to raise pressure. Worth the price if you need more than the typical 35psi." Read more

    "...compared to the compressors I used before, and has a bag and hose that are reasonable...." Read more

    "...Filters Disposable Spray Gun Filter , I use the red because they are cheap and last long*****..." Read more

    "...Has some weight. This one is a keeper, and cost is decent enough to put 1 in each vehicle." Read more

    45 customers mention45 positive0 negative

    Customers are satisfied with the noise level of the tools. They mention that it works fast and is relatively quiet.

    "...While not whisper-quiet, the 400P's noise level is manageable, making it suitable for various settings without causing a disturbance...." Read more

    "...It is relatively quiet and has good reach for a 20 foot pickup. You don't need to move the unit to reach all four tires...." Read more

    "Quiet strong and fast to raise pressure. Worth the price if you need more than the typical 35psi." Read more

    "...QUIET! The el-cheapo was louder than the vehicle, running, and I have a chopped exhaust with a shorty...." Read more

    44 customers mention39 positive5 negative

    Customers like the ease of use of the air compressor. They say it's super easy to use, and a perfect and simple set up. They also say there is not a lot of assembly before your first use, making it more convenient than using a gas station air. Customers also say the setup process is quick and problem free. They mention that the unit is small, fast, powerful, and put together well. They feel it effortlessly handles car tires, bike tires, and even inflatables.

    "...of reaching a maximum pressure of 150 PSI, the 400P effortlessly handled my car tires, bike tires, and even inflatable water toys...." Read more

    "...Overall, very impressed with how small, fast, powerful, and put together the unit is. Has some weight...." Read more

    "I live this little thing. It comes in a nice bag and it’s super easy to use...." Read more

    "...The fitting works and fit my stems well allowing ease of use...." Read more

    49 customers mention18 positive31 negative

    Customers are mixed about the temperature of the product. Some mention that it runs hot, while others say that it's cool enough to pack after 15 or 20 minutes of airing up. The cylinder was warm but not hot to the touch, and the compressor, air-up rate, and heat buildup are as described. The aluminum shrouding is meant to distribute heat, and it works in 32-degree weather as well as 100-degree. However, some customers say that the unit gets quite hot.

    "Inflates well. Heavy. Just beware of duty cycle. All pumps get hot and need time to cool down" Read more

    "...It inflated the tire to 55psi in about 3 minutes. The cylinder was warm but not hot to the touch...." Read more

    "...It became (predictably) very hot. The heat caused my brand new air line to fail at the compressor end...POP!.Lessons learned:..." Read more

    "...The pump got a little hot during my first little job. It never got REAL hot, though...." Read more

    Overall satisfied
    4 Stars
    Overall satisfied
    The pump itself is great and you can tell it s a quality product but the hose is really not useful.First the gauge is next to the tire you inflate so you need to go constantly between the pump and the tire if you want to adjust the pressure with the pump. The best is to inflate with a higher pressure and then deflate to get the desired pressure.Then the connector to the valve tire is with a 90 degree angle which makes it really hard to connect as it needs to be flush with the tire rim. I ended up making a new hose with a straight connector. It s more compact and a lot easier to connect.I also added quick disconnect at the pump with a digital gauge equipped with a deflation button so that I can adjust the tire pressure at the pump. I got everything from harbor freight for about $20 and it makes the system prefect. I don't know why they don't do something like this.Be also aware that this model doesn't automatically stop of you have an overpressure so make sure to only buy open flow fittings or valves. The 400 automatic has a pressure switch that stops the pump, so if you want to use an air pressure gun get the 400 automatic, not this one.
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    Reviewed in the United States on August 11, 2023
    3 people found this helpful
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    Reviewed in the United States on March 4, 2020
    34 people found this helpful
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    Reviewed in the United States on January 17, 2018
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    Reviewed in the United States on September 19, 2023
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    4.0 out of 5 stars Overall satisfied
    Reviewed in the United States on January 15, 2024
    The pump itself is great and you can tell it s a quality product but the hose is really not useful.
    First the gauge is next to the tire you inflate so you need to go constantly between the pump and the tire if you want to adjust the pressure with the pump. The best is to inflate with a higher pressure and then deflate to get the desired pressure.
    Then the connector to the valve tire is with a 90 degree angle which makes it really hard to connect as it needs to be flush with the tire rim. I ended up making a new hose with a straight connector. It s more compact and a lot easier to connect.
    I also added quick disconnect at the pump with a digital gauge equipped with a deflation button so that I can adjust the tire pressure at the pump. I got everything from harbor freight for about $20 and it makes the system prefect. I don't know why they don't do something like this.
    Be also aware that this model doesn't automatically stop of you have an overpressure so make sure to only buy open flow fittings or valves. The 400 automatic has a pressure switch that stops the pump, so if you want to use an air pressure gun get the 400 automatic, not this one.
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    One person found this helpful
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    Top reviews from other countries

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    Vlad
    5.0 out of 5 stars Buenísima
    Reviewed in Mexico on June 8, 2021
    One person found this helpful
    Report
    James C.
    5.0 out of 5 stars 400P Exceeds Expectations
    Reviewed in Canada on September 1, 2020
    6 people found this helpful
    Report
    Drew
    4.0 out of 5 stars 4x4 Compressor
    Reviewed in Australia on April 1, 2023
    Amazon Customer
    4.0 out of 5 stars Four Stars
    Reviewed in the United Kingdom on January 24, 2016
    Linda’s lowdown.
    5.0 out of 5 stars Excellent compressor for big tyres.
    Reviewed in Canada on July 18, 2021
    2 people found this helpful
    Report