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

The VIAIR 400P portable air compressor is a game-changer in the world of on-the-go inflation. With its impressive power and user-friendly design, it's become an essential tool in my automotive arsenal.The first thing that struck me was its sheer power. Capable of reaching a maximum pressure of 150 PSI, the 400P effortlessly handled my car tires, bike tires, and even inflatable water toys. Its fast inflation speed meant I spent less time waiting and more time enjoying my outdoor activities.Portability is a strong suit 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. Whether I'm on a road trip or a weekend camping adventure, the 400P is always ready to assist.The built-in pressure gauge is a nifty feature, allowing me to monitor and adjust inflation with precision. The integrated LED work light proved to be incredibly handy during nighttime use, making the whole process smoother and more efficient.While not whisper-quiet, the 400P's noise level is manageable, making it suitable for various settings without causing a disturbance.In summary, the VIAIR 400P offers an unbeatable combination of power and convenience. It's a reliable and efficient companion for any outdoor enthusiast, providing peace of mind and timely inflation whenever and wherever you need it. If you're looking for a portable air compressor that delivers on its promises, the VIAIR 400P is the one to get.

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.

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.

A friend recommended this to us, happy to report it works great!

When I drive on rocky or washboarded roads, I let air out of the tires, allowing them to roll smoothly over the obstacles instead of bouncing and losing contact with the road. This also makes the tires less vulnerable to damage from sharp-edged rocks. Returning to pavement, tires must be aired back up to the recommended highway pressure. I bought this pump to do that. I had a smaller, less expensive one but it took a very long time and came close to overheating and timing out before I could air up four pickup tires. Adding four travel trailer tires to that would have been impossible with the smaller pump. I gave the 400P a four for ease of use because of a unique situation with my pickup (2019 6.6L Duramax diesel). The positive and negative battery terminals are on opposite corners of the engine compartment (diesels have two batteries). To attach the VIAIR 400P I had to split the battery wires apart (easy, just pull). Attached to both terminals, the wire is barely long enough to set the pump on the ground, and the only ground it can reach is directly in front of the truck. Consequently I have to stretch the air line to the limit to reach the rear tires. I would need an extension if the truck were any longer (mine is a crew cab with an 82 inch bed). The 400P should have a longer electric wire. Another five feet would help greatly. Other than that, the pump works great.

I use this to winterize my 30 foot travel trailer. I use the camper mainly in the winter, and have to winterize it after each trip. I installed a 12 volt waterproof automotive electrical connector near the city water inlet under the camper, and another on the pump. Also, on the air pump I have at the air quick connect a brass T piece, one side goes to a male water hose fitting, and the other to a 50 psi relief valve that will blow if the pressure goes over 50 psi (about $5 on Amazon.) It will blow out my pipes in the camper in about 4 minutes. I cut it off after 2 minutes and run it twice, letting it cool off a few minutes in between, which may not be necessary. I love having this small air compressor instead of having to haul down something that weighs 50 pounds or more to do the job. Search Youtube for this pump and you will see how other people have set this up.

Great value. Pumped up my trailer tires from 20 to 60 PSI on all four tires in about 10 minutes total. Easy to operate. Small enough to easily fit behind the back sit in my Tacoma.