Dual Cylinder Air Compressor with Digital Pressure Gauge Tire Inflator Kit, 12V Portable Inflator 12.35ft³/Min, Offroad Air Pump for Truck Tires, Heavy Duty Max 150 PSI for 4x4 Vehicle & RV

Well, I just received this Alltop twin cylinder 12VDC compressor. The packaging was great. It was actually triple boxed. It's own box with pictures and descriptions. Then a "packing" box with styrofoam. Then Amazons box. So, I was fairly assured the unit would be in great shape when "un boxed". While the compressor does come with it's own air fittings, they are industry standard fittings. So, it's quite possible that your home air tools, i.e. blow guns, extension hoses etc. will work. It all depends on what kind you have. As for performance. Well, here's a down to earth test. WE run 315 70 17's on our 2015 Jeep JKUR. When it comes to trail tire pressure, I've been running 10 psi for decades and have never had any issues. So, for this test, I bled one of my 315's (basically the same exact tire as a 35" tire) down to 10 psi. I then connected the compressor to the Jeeps battery and the hose to the tire valve. I started both the compressor and my phone's stop watch at the same exact time. Not knowing what kind of exact pressure is in the tire at any given time, which has been stated by many on here, I gave this compressor ONE MINUTE of pumping before I hit the power button on it to stop it. With the Jeep engine running, that gave the compressor full voltage to use while pumping. At the end of one full minute of pumping, my 315 had been inflated from 10 psi to 25 psi. So far, so good. So, I bled that tire down again to 10 psi. I reset my phones stop watch and then, hit the power button on the compressor and the phone. This time I gave that compressor 1 minute and 15 seconds. At the end of that session, that 315 was sitting at 31 psi which, is my street pressure. Soooooo, with all that being said, at this time, I'm pretty darn happy with its performance. It is a tad LOUD but, what 12V compressor isn't!!! I had a Viair 400P before this and that compressor would take 2 minutes and 45 seconds to air my 315 from 10 psi to 30 psi. I'm not one for lolly gagging around at the end of a trail day. I just like to air up efficiently and then head on back to camp or home or ? THEN I can relax. So, this compressor is about as fast in airing up a 315 from the low pressure of 10 psi to my street pressure of 30-31 as you can get for a 12V compressor. And for the money, I think it's well worth it. The CFM on this compressor is over twice as much as a SB one and it's only $3.00 more so, WHY NOT! 11/21/23 edit: I've received some repetitive questions on this little compressor so, I thought I'd take a minute to answer to the general public just in case they're thinking of this unit. The question that's been asked more than a few times is: "Will this compressor shut off when it reaches it's max pressure"? NO, IT WILL NOT! To the best of my knowledge, none of these 12V compressors have a built in pressure switch. But, I've not bought them all so, I really don't know. I do know that the All Top didn't. So, here's the mods I did to this compressor to accomplish a few goals. 1. These compressors, like ALL 12V compressors, will get extremely hot when used to pump air back into todays large jeep/truck tires for street pressure. If you don't think they get hot, you're mistaken. ALL compressors build heat when compressing air, it's a given. That's why all your commercial compressors used *finned* supply lines from the compressor heads to the tanks. Soooo, I added THREE computer cooling fans. One for each cylinder/head and one for the center manifold. Those fans are hard wired into the power plug. They come on immediately when the power is plugged into the compressor. 2. Since these compressors have no regulation to automatically shut off at a given pressure, I added a pressure switch. It cuts in at 85 psi and cuts out at 100. I installed it right in the rectangular manifold. 3. I completely discarded the printed circuit board that comes with the unit and wired in my own 125 amp relay to handle the large current required for turn-on and turn-off. 4. I added a small toggle switch to control the power to the pressure switch. 5. I also discarded that junk power cord that was permanently attached to it. Some may like it but I was not a fan of that cord. 6. In place of that cord, I installed an Anderson SY-50 connector and bolted it right to the cage of it. To power the unit, I build my own 6' power cord from Stinger brand ultra-flexible 4 gauge wire/cable. This wire/cable is so flexible it's like a fully cooked spaghetti noodle! I installed Anderson SY-50 connectors at both ends. One is for the compressor and the other is for plugging in to a mounted SY-50 connector on the front of our Jeep. I don't even have to lift the hood to get this compressor going. 7. I was not a fan of that little short hose that was permanently attached to the manifold. So, I removed it and drilled and re-tapped it for a standard quick release fitting that many of us use at home etc. So now, instead of burning that new little compressor up each time I stop to check pressure, that unit stops dead on its own. I plug in that 6' power cord to it, the three 70mm x 15mm computer cooling fans automatically turn on, then I turn on the little toggle switch, the compressor runs for approximately 1/2 to 1 second and auto-shuts down. I then break out my Flexilla 25' flexible air hose and connect it to the compressor. Again, that compressor runs for approximately 1-3 seconds to fill that air hose and then shuts off. When I begin to fill a tire, I give it around one full minute to get about 90% of what's needed for street pressure then release the trigger on the air chuck. Within approximately 2 seconds, that compressor shuts off! I then give it about 15-20 more seconds to reach my particular desired street pressure of 30 psi and at that time, the compressor shuts off. All the while, those fans are running and blowing air directly onto those heated cylinders and heads and manifold. Waaaaaaay better than just letting ambient air try and cool it down. By the way, all those components/parts that I added, really didn't ad any bulk or any appreciable exterior measurements. It's almost as compact (if ya wanna call this one a compact compressor) as it was from the factory. Now, one more thing. OBVIOUSLY, since I did a zillion modifications to this unit, I threw the warranty right out the window! If this little compressor goes up in flames tomorrow after owning for a month and only using it for one or two times, then it's all on me. I eat it. But, to me, the modifications and the ultra beneficial results of auto-off-on, the fans, the elimination of that junk power cord and more, were/are worth it. I'd do it again in a heartbeat!

This thing is a beast. It's super powerful and you should be running with this with at least a 2 tire at a time inflation system at min, or better a 4 tire at once to really take advantage of the flow which is significantly more than a single valve stem can flow. It had all 4 tires from 15psi back to 50psi in like 90 seconds or 2 min. My old pump would take closer to 8 ish min per tire. The LCD display and ability to preset the pressure to fill to is really awesome too. Not having to babysit it and shut off the pump to check is great. It will do quick auto-stops to self check the pressure and ensure it's good and then continue pumping. If you are out offroading and airing tires down regularly this is a killer piece of kit to make that better. I combined with an Outran 4 Tire Inflation Deflation System which worked out well.

I don’t write a lot of reviews. But I must say I’m extremely happy with this compressor. I very much love the auto stop when I release the handle. It does a phenomenal job of airing up my tires on my Rubicon. I needed a portable compressor for my off-roading fun with an auto stop. It uses standard US sized hoses, which I needed to be compatible with something else I have. My only complaints but not huge. It seems like the air gauge when I release it shows I have slightly less air pressure than I actually have by a pound and a half. Not a big deal. I carry a very small digital reader as well. Also, the rubber on the bottom of the compressor unit could be a little more tacky/sticky. On the smooth garage floor when I use it, it seems to vibrate and move across the floor too much. I believe I can come up with a solution to that barely easily with a small portable rubber mat that won’t slide. Should be fine off-road I’ve only used it once last night and it was phenomenal. So happy with it overall.

So to bookend this, I have a 06 4x4 Roadtrek 170. I need 50 PSI on the front and 80PSI in the rear on the street. I air down to 30 psi on washboard roads. This little compressor will run the tires up in about 5 minutes or so. The analog gauge is somewhat inaccurate.... Here's what happens. Hook it up to the battery and the valve core and turn it on. (It will not turn itself off BTW) the gauge is about 10psi higher than the tire. My guess is that the hose is cheap and expands and / or the gage is reading the pulse from the pump... either way, that part is inaccurate.. so get used to over filling and bringing it down to where you need it.. What I've been doing is run my front tires to 70 psi and manually shut off. Then use the bleed button to drop the pressure into my needed zone. It's a good little device. I'm not sure how long it will last, but there were no strange sounds coming from it. It ran really smooth and somewhat quiet compared to my harbor freight cheapo. I would buy the one with the digital pressure on/off... but it will shut off at pump pressure, not tire pressure.. so you would still have to fuss with it. For my money, I would get this one and fuss with it as opposed to the digital set it and go one and end up fussing with it... I would buy this again..

I use this compressor to blow out the lines on my motor coach during winterization. It works really well and has enough output capacity to blow out all of the water in the lines. The only drawback is it will overtemp and have to let it cool down to fully blow out all of the lines. Not a big inconvenience though the winterizing still only takes about an hour total. I like that the compressor is very compact and easy to use. Very good product.

Excelente compresor infla de 0 a 36 PSI en 1½ minutos

Fast, powerful, trustworthy! All you need for overlanding! It pumps up 4 33” tires from 15 t0 33 psi in less than 8 minutes !

Very strong, sold, and you can feel the quality when using it.

Fast, very fast. Took 4.5 minutes to pump up 4 35” tires from 15 to 35lbs

A little bit heavy but it’s a great product