Brand | VIAIR |
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Voltage | 12 Volts |
Recommended Uses For Product | Tire Inflation |
Power Source | Battery Powered |
Noise Level | 74 dB |
Special Feature | Portable, Heavy Duty, Automatic Shut-Off, Quick Inflation |
Included Components | Presta Valve Adapter, 30ft inside braided coil hose, 3 Pc inflation tips kit, 160 PSI Tire Inflation Gun, 12v Portable Compressor |
Item Weight | 10.7 Pounds |
Maximum Power | 360 Watts |
Capacity | 2.3 Cubic Feet |
Color | Silver |
Product Dimensions | 10.87"L x 5.83"W x 7.48"H |
AC Adapter Current | 30 Amps |
Air Flow Capacity | 2.3 Cubic Feet Per Minute |
Model Name | 400P Automatic Portable Compressor Kit |
Hose Length | 30 Feet |
Manufacturer | Viair Corporation |
Item Weight | 10.7 pounds |
Country of Origin | China |
Item model number | 40045 |
Is Discontinued By Manufacturer | No |
Exterior | Painted |
Manufacturer Part Number | 40045 |
OEM Part Number | 40045 |
Special Features | Portable, Heavy Duty, Automatic Shut-Off, Quick Inflation |
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82% positive over last 12 months
82% positive over last 12 months
100% positive over last 12 months
VIAIR 400P/40045 Automatic Portable Compressor, Tire Inflator Kit, Air Compressor for Truck, Jeep, SUV, and Car Tires, Portable Air Pump Kit, Car Accessories, 33% Duty Cycle, 150 PSI/2.30 CFM
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | VIAIR |
Voltage | 12 Volts |
Recommended Uses For Product | Tire Inflation |
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.
- 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; 10.70 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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This Item VIAIR 400P/40045 Automatic Portable Compressor, Tire Inflator Kit, Air Compressor for Truck, Jeep, SUV, and Car Tires, Portable Air Pump Kit, Car Accessories, 33% Duty Cycle, 150 PSI/2.30 CFM | Recommendations | dummy | dummy | dummy | dummy | |
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Price | -8% $276.43$276.43 List: $299.95 | -9% $159.90$159.90 List: $174.95 | -22% $290.32$290.32 List: $369.95 | $257.99$257.99 | $340.95$340.95 | -14% $334.99$334.99 List: $389.95 |
Delivery | Get it as soon as Sunday, Mar 17 | Get it as soon as Sunday, Mar 17 | Get it as soon as Sunday, Mar 17 | Get it as soon as Sunday, Mar 17 | Get it as soon as Sunday, Mar 17 | Get it as soon as Sunday, Mar 17 |
Customer Ratings | ||||||
Accuracy | 4.6 | 4.5 | 4.5 | — | 4.3 | 4.7 |
Easy to use | 4.8 | 4.7 | 4.6 | — | — | 4.7 |
Value for money | 4.7 | 4.4 | — | — | 3.8 | 4.6 |
Noise level | 4.7 | — | 4.7 | — | — | 5.0 |
Sold By | Amazon.com | JACO Superior Products | Amazon.com | Amazon.com | Amazon.com | Amazon.com |
capacity | 2.3 cubic feet | — | 2.3 cubic feet | 33 inches | 3 cubic feet | 2.3 cubic feet |
power source | Battery Powered | Corded Electric | Battery Powered | 12v Battery (Alligator Clamps or Ring Terminals) | Battery Powered | Battery Powered |
air flow capacity | 2.3 cubic feet per minute | 3.5 cubic feet per minute | 2.3 cubic feet per minute | 2.3 cubic feet per minute | 3 cubic feet per minute | 1.8 cubic feet per minute |
voltage | 12 volts | 12 volts of direct current | 12 volts | 12 volts | 12 volts of direct current | 12 volts |
maximum power | 360 watts | 396 watts | 414 watts | — | 607 watts | 318 watts |
maximum current | 30 amps | 33 amps | 30 amps | 20 amps | 44 amps | 30 amps |
noise level | 74 decibels | 72 decibels | 74 decibels | 73 decibels | 78 decibels | 69 decibels |
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Important information
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Top Brand: VIAIR
From the brand
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The most trusted air compressor brand for 25 years.
VIAIR is a leading manufacturer of high-performance air compressors for mobile pneumatic applications. Founded in 1998, VIAIR offers a complete line of air compressors and air accessories for both the on and off-road markets.
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Does the engine need to be running to operate the compressor?
The compressor needs a constant 13.8 Volts for optimal performance, and that is only possible with the engine running.
What is duty-cycle?
It’s the maximum continuous run time of the compressor, expressed in % of 1 hour.
Is a direct-drive motor better than a gear-drive motor?
Direct-drive motors deliver power straight to the piston rod, it is quiet and reliable. Gear-driven motors have an extra layer of friction, creating a louder system that’s prone to rapid performance decline due to deteriorating gear teeth.
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".
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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
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
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.
From the Manufacturer
40045 Standard Features
- Permanent Magnetic Motor
- Duty Cycle: 33% @ 100 PSI
- Max. Working Pressure: 150 PSI
- Max. Amp Draw: 26 Amps
Product information
Technical Details
Additional Information
ASIN | B000X9B32M |
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Customer Reviews |
4.8 out of 5 stars |
Best Sellers Rank | #57,251 in Automotive (See Top 100 in Automotive) #281 in Wheel & Tire Air Compressors & Inflators |
Date First Available | June 1, 2006 |
Warranty & Support
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality, performance, ease of use, noise and speed of the air compressor. They mention that its well made, works great for off-roading and that it's surprisingly quiet. They are also happy with compactness. However, some customers have different opinions on value and accuracy.
AI-generated from the text of customer reviews
Customers are impressed with the quality of the air compressor. They mention that it's well-made, solid, and reliable. Some say that it is the nicest personal tire pump they have ever owned. Overall, most 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
"...The triggle with the guage on it is quite nice and heavy and better than I thought it would be...." 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
"...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
Customers are satisfied with the performance of the air compressor. They mention that it works great, is great for off-roading, and is very useful. It is well-engineered and works relatively quickly. The bag quality is excellent and all accessories have been flawless so far. Overall, customers are happy with the product's performance and recommend it to others.
"...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
"...This was expensive for me, but, it works so much better. Now it doesn't take me 1.5 hours to check and fill all my tires. I love it." Read more
Customers find the air compressor easy to use. They mention that it has a smooth operation, is easy to set up, and is convenient than gas stations. Customers also appreciate the handy design and the quick air flow.
"...It is easy to put on, contains a 2 part filter already, and has two spare filter sets in a separate bag...." 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
"...The bag is sturdy and I see it lasting a long time, very easy to use and I hope it lasts forever. I love it...." Read more
"Very handy. One just never knows when it'll be needed. 12 volts, long enough hose...." Read more
Customers generally like the noise level of the air compressor. For example, they say it works awesome and is surprisingly quiet, with 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
Customers are satisfied with the speed of the air compressor. They mention that it is a great little product, fast, and will pump up a tire very quickly. It operates smoothly and quickly, and is able to save time. It is very efficient, and each tire takes under 2 minutes to fill. It's less noisy, more reliable, and has a higher flow rate.
"...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
Customers like the compactness of the air compressor. They say it fits nicely in the basement of their RV, that everything fits in a bag, and it's easy to set up and light to carry. It is a great little portable air compressor, and fits nicely behind their rear passenger seat in e double cab truck.
"...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
Customers have mixed opinions about the value of the air compressor. Some say it's well worth every dollar, while others say it is a bit overpriced for the level of quality. Some customers are disappointed with the bag and say it has no purpose.
"...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
"...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
"...Well worth the money." Read more
Customers are mixed about the accuracy of the air compressor. Some mention that the pressure gauge is accurate once the pump shuts off, while others say that it couldn't be less accurate or consistent. The built-in tire pressure gauge, is a nice feature, but some customers say that the air gauge is nit really accurate.
"...as other reviews mentioned the air gauge is a bit off. at 65psi on the viair guage my other 2 guages both read 58psi. about 7psi high...." Read more
"...•The pressure gauge is accurate once the pump shuts off (3-5 seconds after releasing the lever)..." Read more
"...However, it's loud and takes forever to air up my 32" truck tires. I spend 45 minutes to air up from 20 to 35 psi and it likes to wander...." Read more
"...The inclusion of a pressure switch means that you hook up the battery and turn on the switch once, but the pump only runs when you are filling the..." Read more
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Tested it out on two of my F150 20" tires aired down below 20#, the unit was able to air them up to over 40# both in less than 2.5 minutes. The automatic feature is great as even though the unit is only 33% duty cycle, it shuts down automatically unless its coming up to pressure, or actually pumping air in to a tire. I can't see the duty cycle being an issue with this nice feature and given how I will primarily use it. I should be able to top up all 4 20" tires coming off the beach in about 20 - 25 minutes including setup and pack up and with only about 15 minutes run time on the motor.
Unit is quiet and seem very well built, time will tell how it holds up. The chuck assemble clamp locks down on the valve stem nice and with the handle having an air down / release button its quick to use to air the tires down too.
Unit was only warm to touch after the first 2.5 minutes for the first tire. But even after the cool down moving to the second tire which included time for the air down of that tire, after the next 2.5 minute on cycle the head was too hot to touch. So I full expect it to be very hot after all 4 tires. But with the auto shut off, the overheat and over pressure safety shut-offs I cant see the heat being an issue, but again time will tell how the unit handles that heat.
The case and accessories seem good, looking forward to making use of it coming off the beach. Only concern after using it would be the durability of the chuck assembly, seems like its maybe a step down lighter in duty than the actual pump assembly itself. Will see how it holds up after practical use and a couple of drops (accidental) to the pavement.
Even though the $180 I paid for it is more than I wanted to invest, this unit seems like the best option for quick air up and compact size / low weight. If I had to complain about anything, I'd say it would be more convenient to not have to pop the hood and connect to battery, I can see this being a PIA in bad weather. A nice option would be to hard wire some connections to battery that had exterior accessible jacks on the vehicle; then be able to replace the battery clamps with mathings plugs to mate to jacks. If I was younger I'd consider doing a custom wiring job myself.
Overall seems like a great job anyway ViAIR !!!
The product I received is not exactly what was described. I contacted Viair, and found that I had received a newer model than described with the following differences:
1. The air hose is black, and an updated version. Very happy with this.
2. The gun is a 160psi gun, NOT 200psi. This change was made because 200psi is overkill for most people. I prefer the 160psi for my use, the dial is easier to read. I love it.
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. The air hose has more than enough length, I can get to my spare without any pulling or stretching.
The compressor is quiet and quick. Using the release valve in the gun, I deflated a tire to 20psi (very quickly, great valve). I then inflated it to 36psi in less than a minute. The compressor worked beautifully. It will automatically shut off if the trigger on the gun is not depressed for a few seconds, and start again when the trigger is depressed.
This compressor comes with the filter assembly ready to attach. It is easy to put on, contains a 2 part filter already, and has two spare filter sets in a separate bag.
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. There are two small side pockets, one with a flap and one with velcro. There is no separate pocket for the gun, though. I wish they had included this. I will find a pouch to protect the dial.
As important as all of the above: Viair customer service is amazing! The rep I spoke with was very friendly and knew absolutely everything about the product. She answered all my questions quickly and was a joy to speak with.
I definitely recommend this compressor.
Top reviews from other countries
The hose is nice quality. Light. The connectors on hose are brass.
The air chuck and gauge are heavy duty. You can use a third party one if you like. Standard 1/4 NPT connectors are used throughout.
The unit is very quiet when running, and does not vibrate like crazy. Comes with a nice rubber pad under the metal plate.
Comes with a handy bag.
Overall very happy. Wish it was made elsewhere though, I would be willing to pay extra for that.
The 400P is bulkier but still quite okay. The high quality pump is definitely impressive. Very well built. The gauge is also quite bit better than the one with 90P.
The coiled 1/4" air hose could be improved. I'm going to find a shorter, flexible, straight, standard hose so I don't have to use it.
The valve clasp is very stiff making it hard to put on and difficult to remove. Don't see a fix for this.
The carrying bag is really a nuisance. Looks fine but gets in way. Hard to believe a company as good as Viair would tolerate it.
The automatic feature is nice and almost forgives all less desirable features.