VIAIR 400P - 40043 Portable Compressor Kit. Tire Pump, Truck/SUV Tire Inflator, For Up to 35 Inch Tires

As someone getting into off-roading, having a air pump is a must after airing down and hitting the trails. After extensive research and reading Amazon reviews, we chose this one. It has worked flawlessly so far and I feel great about the build quality, especially since there is a warranty. When using, it does get a bit hot so don't touch the hose to the body while in use. Otherwise I expect this pump to bring us happiness after off-roading for years to come.

This is a very powerful machine that gets the job done quickly. It’s light and compact, and simple to use. One small demerit is you need to turn the compressor off briefly to get the actual air pressure. It’s tiny nit to pick, however, given the overall quality and serviceability of the product.

So a few years back I purchased an off brand of small portable air compressor. It lasted a while. A trip to the desert, a year of airing up a 300 dollar tire that couldn't be patched because name brand tire dealer doesn't know what a large patch is, and it ran like that for some time. On a recent trip to the beach, in 70 degree weather it crapped out. Smoked. Burned to a cinder and didn't blow the fuse? I bit the bullet. Purchased the 400P. Night and Day difference. Air up is less than half the time. Heat, while any compressor will generate it, is managed well with the duty cycle. QUIET! The el-cheapo was louder than the vehicle, running, and I have a chopped exhaust with a shorty. Accessories... well I don't plan on using it for balls or a mattress. But they are free. Cord, not a fan of the coils, but you have to make a sacrifice for compact storage. Plenty of length for a full size truck. Cool air down feature for the perfectionist. I like it. I also have another tool for this, but it's an option. The gauge is close. About 2 pounds low. It isn't NASCAR or a spaceship. It will get me home. The bag. Time will tell. It works for carrying everything and keeping it in one place. Zippers and snaps will probably go, but it will be a while. Bag is lined. Probably rain resistant. As long as I don't submerge the snorkel it should be ok. Overall, very impressed with how small, fast, powerful, and put together the unit is. Has some weight. This one is a keeper, and cost is decent enough to put 1 in each vehicle.

The compressor works great! I use it to fill my tires on my RV. They need to be over 120 psi. This pump does this just fine. The only issue is the built in psi gauge only goes to like 80 or 90 psi. I thought I bought the wrong compressor at first. But I checked and it does work up to 150 psi. It just doesn’t show you the pressure that high. Bummer

I first purchased a Viair 88P from amazon. When I received it the unit did not work properly out of the box. I immediately returned it to Amazon because of a factory defect and decided to order the 400P model because of its greater capacity to move air. I tested it on a SR225-75 large 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. The cylinder was warm but not hot to the touch. The unit is larger and heavier than the 88P but was worth it because of its much greater capacity to get the job done. It comes with a cloth case that is adequate but not what you would consider heavy duty. It does keep all of the components in one place when needed. The size of the 400P in its case is to large to place under most passenger car seats but could be stored in the trunk or pickup truck tool box. If the components were separated without the case, they might fit under some passenger car seats. The removable air hose is coiled and compact and easily stretched out from the front of my 38' RV to the rear tires. Since it is equipped with an industrial type hose quick connector other hoses or extensions could be added but would probably not ever be needed. I would purchase this unit again and would highly recommend it to others along with a quick external tire puncture repair kit particularly if you drive long distances in rural areas.

Super fast inflation time on my 33s. Looks like a great quality. Definitely be using this on my offroad activities.

I’ve been trying to find a portable tire pump that works on truck tires for along time. I finally found one! My rear truck tires need to be pumped up to 80 lbs when towing my travel trailer. My travel trailer tires need 75 lbs. The cheap little air compressors you can get at Walmart or here on Amazon we’re not up to the task. Several of them boasted 150 psi capable, but wouldn’t go past 73 psi. Took a chance on this one and what do you, it fricking works great. It’s fast, quiet, and doesn’t heat up to ridiculous temperatures. The pressure gauge is accurate (I checked using my other tire gauge). The size of the pump is small enough to fit in my kit and the included carrying bag keeps everything organized. So far, I couldn’t be happier.

Ready to use right out of the box. Screw the air filter on (several extra filters included) and put it to work. Used on a recent off-road Jeep trip, served 2 Jeeps, one with 32 inch tires and one with 31 inch tires. Duty cycle was sufficient to take all 8 tires from 17psi to 35psi without a break between. Pressure gauge was within 2 psi of stand-alone gauge. Deflation feature worked well, but feels a little under-designed. If I were to use it every weekend I'd probably spring for an independent deflation tool. Battery leads and clamps are good quality and of sufficient length. My buddy and I parked our Jeeps nose to nose and placed the compressor on one of our front bumpers while using. With the quality air hose we were able to reach all the corners of our rigs without moving the unit. The only downside is that it is easier to use with 2 people, one to attach the hose to the tires, and one to switch it on and off. The same model with an automatic switch feature is available and would be a nice option if it fits your budget.

Quick postage and arrived in good condition.

Compresso muito bom. Vem completo, cabos, mangueira, bico, manômetro e bolsa de transporte. Boa potência e enche mesmo, ideal para atividades off road.

From18 psi to 32psi in just 59 sec Recommend

Esta bomba la he usado 3 veces al salir a terreno para eso flar las llantas de 33, en 15 mins baje la bomba, infle las 4 llantas de 20 PSI a 50psi. Recomendado.

The product arrived well packaged and easy instructions. The carry case is extremely well made with separate pockets for the compressor and bits. Connecting to the battery is easy and the hose is more than long enough for my 20 ft camper. It works well and is accurate. One odd thing which could be a safer feature or it assumes that we have long arms is the positioning of the on/off switch. When the compressor is connected to the battery and the hose to the back tyre the pressure gauge is near the tyre and the on off switch on the compressor??? I switched it on briefly walked to the back cane back etc. Now it could be that there is an on off lever or attachment to regulate pressure near the gauge but I haven’t got one. Maybe a safety feature???? I still like it though. Solidly made. Easily portable.