VIAIR Constant Duty OBA Onboard Air System with 450C Air Compressor & 2.5 Gallon Tank, 12V Offroad Compressor, 150 PSI, up to 37" Tires

This is my third one of these. They are amazing. Ive replaced multiple arb pumps for these now. Has one in my jeep for 10 years now and its still going.

They actually give you everything you need. You might end up needing a few more brass fittings, I did but I went a different route. Rather than using this on a truck I installed this in my Jeep for airing up tires after the trail. Build quality of everything is great all around- I couldn't find anywhere that they skimped out. Get a good idea of where everything will go and make sure it will fit. Be sure that the air line won't get kinked because that's how you spring a leak. It might not be a bad idea to buy some extra hose, but they give you plenty. I used more than I needed and only went over by a few feet. They give you 6' of 3/8" hose for remote mounting the filter, but I mounted it next to my engine intake. I uses 1/4" tubing for this because the 6' of 3/8" wasn't long enough, so I think this is why it takes a bit longer to fill. The gage they give you is great, and they give it to you in a little sheet metal cutout with a switch. I mounted mine where it wouldn't be in the way- I'm sure if you're putting this in a truck you'll be able to keep the gage in the sheet metal mount they give you. They also give you an extra bulb. And 3 air filters. Wiring is also very easy, as long as the pressure switch gets its 12V power it'll turn itself on and off according to whatever pressure its' at. My only complaint is that they don't give you any way to mount the pressure switch. I used a giant cable tie, but I'll come up with something eventually. Definitely would recommend this product.

I've been using this compressor going on 7 years now, it has been reliable and still works like new with one exception. Despite the description saying it is IP 67 rated and can be mounted UNDER a vehicle, the pressure switch that comes with it IS NOT rated to get wet. There is in fact a warning on it about getting wet. Mine corroded internally and failed after a couple of years. If you are going to mount it under the vehicle, buy a water proof pressure switch, like this one: https://www.amazon.com/gp/product/B002Q3LXRI It should have been included in the first place, and is much smaller and more compact and most importantly, listed as water tight.

This is the second one of these kits I have installed on one of my trucks. The first one is over 13 years old and is still working perfectly. This one went on a 2020 4 door Long Bed Chevrolet 2500HD LTZ for the air bags, air horn and onboard air supply. I used the ViAir bracket for the compressor and fabbed my own brackets from 1/8" x 1" flat bar for the 2.5 gallon tank. It was a tight fit length wise but worked out very well. I added a 1/2" bung to the air tank for the large air horn and found the tank steel wall nice and thick and easy to weld the new 1/2" npt bung to. This kit comes with a 450C compressor. I use the compressor heavily on both trucks and it does get hot when running continuously but both have worked great with no failures.

I bought and installed this setup for my Toyota FJ Cruiser for when I air down for off-roading then air back up. Also for my camper trailer when we are on the road for several weeks and need to air up a tire or 2 a few lbs. the complete setup took about a day to install. I had to make a plate for the compressor to sit on under my hood and another frame for the tank to be installed behind the rear axle. I also had a local parts store fabricate an airline 12’ long to connect the compressor to the tank. The female quick coupler that came with this is junk. After about a month the coupler started to rust and was hard to connect. I installed the coupler in to my rear bumper. I have since replaced the coupler with a good quality quick connect coupler. I have times serving all 4 of my tires fro 15psi to 38 psi. From the time I turned on the compressor with zero psi in the tank to turning it off and draining the tank. Total time was 26 minutes. When I had my previous portable compressor in a bag it took this long just to service 1 tire. I’m very happy with my purchase.

This is the second of these systems I have bought. The other unit I let go when I sold the truck it was installed on. Chunk all of the included 1/4" MIPT fittings and go buy American made - the thread taper is correct. Also chase all of the tank 1/4" female tank bosses before you screw in any fittings. The pump will fill the reserve tank in about 7 minutes when its empty. I used 1/4" push on hose - no clamps required. Had some serious reservations about doing so, but, have no regretted it at all!! Absoultely no air leaks - not even a bubble during the soapy water test. Seal your American made fittings with teflon tape and get on with it. All other components of this kit are first rate stuff. Onboard air is a must for me and the remote places I go. Plus I like to blast an air horn every once in a while! Viair is overall the best system I've found - especially for the money spent.

I mounted this under my F350 so that it can turn on with the in-cab switch and easily plug the air hose into a fitting at the side of the truck. I have used this thing many more times than I can remember over the last 7 years. It has held up great and has been one of the more useful add-ons on my truck.

Comes with plenty of material to install in various ways. Really nice setup for onboard air. I’m happy with my purchase. Installed in 2015 Tacoma. Was tired of lugging around portable compressors for off reading. Not only is it convenient. But much faster to air up with the tank.

I have had this installed for the last 2 weeks not and am very happy with the result. It took some figuring on where to mount the compressor and air tank as the instructions say to mount in a dry location. Its a truck and without installing it in the cab a dry location is not going to happen. As an aside those who have installed in their cabs must not have great hearing. Its a compressor and as a result make a decent amount of noise when running. I ended up installing it under the cab of the truck between the frame rails. Not perfectly dry but dry enough for a water resistant compressor to handle. I really like how quickly the compressor fills the tank and it does a decent job on the truck tires as well. My previous onboard compressor did not handle airing up my tires and eventually stopped working. I also tied this compressor into my pacbrake and love having that braking power back.

Great product!! If you want an air supply on your vehicle this will do the job. I have had mine installed for almost a year and used many times, functions great. In cab gage works, pump is fairly fast, and fittings seal very well. If I leave it at 100psi, 2 days later it’s maybe down to 85psi. I would suggest mounting the pump out of water contact zones though as it does get quite hot when ordering and could crack from cold water contact.

Works well /Lots of fittings to help you With Install / Could use Some Brass 90s/ Over All Very Good / Seller Was Quick With Shipping /And Shipping Was Fair

Awesome setup. Mounted very nicely under the hood of my '01 TJ.

Great item if the pressure regulator switch didn’t malfunction. Continually overcharges and relief valve releases. No product support