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Oasis 12-Volt Continuous Duty Tankless Air Compressor

(Based on expert analysis, manufacturer ratings and customer reviews)

4.4 out of 54.4 out of 54.4 out of 54.4 out of 54.4 out of 5
7 Reviews
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Contractor Grade Air Compressors
DC Compressors
Tank Size
No Tank
CFM @ 90 PSI
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Dual-Ring, Oil Control Pistons
Significantly reduces oil bypass into air supply

Oil Reservoir Chamber
Provides relief for crankcase oil transfer and expansion

Oil Sight Glass
Offers a quick visual check of crankcase lubrication

Exclusive Forced Air, Motor & Compressor Cooling System
Deep finned heads and compressor body
Cooled by a 100 CFM fan built into housing shroud
An internal fan also cools the modified 5 hp electric motor

Control Wire
Connection point for optional pressure switch and/or dash switch

Low Voltage Cut-off
Turns compressor off if voltage drops to protect motor

Air Filter
High-flow, long-life filter with serviceable element

Added Features
Heavy-Duty 10' of #4 AWG power cables
High-Flow swedish steel valves

Model Number: XD4000-12
Manufacturer:Oasis Manufacturing
Voltage:12 (DC) Volts
Running HP:2 HP
CFM @ 40 PSI:9
CFM @ 90 PSI:8
Max Pressure:200 PSI
Tank Size:No Tank
Tank Outlet:3/8 Inch
Motor HP:5
Power @ Max Load:2160 Watts
Dimensions:21 x 7 x 11
Product Weight:65 lbs (29.48 kilograms)
Consumer Warranty:1 Year
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Oasis Manufacturing XD4000-12 Reviews & Ratings
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7 Reviews  Sort by 
Steve, the Air Compressor Expert
Air Compressor Expert

Product Expert
Total Reviews
234 Reviews
Total Helpful Votes
2127 Helpful Votes
Air Compressors Direct Recommended

When only the best and most powerful will do, this made-in-USA unit tops the heap.

For comparison, many 12-volt units take almost a minute to fill a 5 gallon air tank from 120psi to 150psi; this unit takes only 11 seconds. Some folks use this for their air suspension systems; check out the video.

It's rated as Extended Duty because the manufacturer recommends 50-hour service intervals. The deep fins and cooling fan reduce heat and wear. The exclusive forced-air system cools the... more
Steve Recommends This Model
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Todd B.
Blaisdell, ND
Purchased from Air Compressors Direct
Purchased 11/21/14
Most Helpful Positive Review
5 out of 55 out of 55 out of 55 out of 55 out of 5
Air Compressor
We just finished putting our new service truck together, so far the compressor is everyyhing we expected & are very pleased. thank you, Todd Brown
Todd Recommends This Oasis Manufacturing Product
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Tim O.
Walterboro, SC
Most Helpful Critical Review
1 out of 51 out of 51 out of 51 out of 51 out of 5
Very let down, will not run a quarter inch impact except for a 3 second burst, in other words when the hose is out of air it's over. Must have a tank, it does not come with a pressure cut off switch. In other words it will blow the hose and keep pumping. You can buy better or just as good for half the price.
Steve, the Air Compressor Expert
Product Expert
We are sorry to hear of the issue with your Oasis product. Your best option would be to voice your concerns to Oasis directly. They can be reached at 888-966-2747.
Manufacturer Response
Brand Rep
I'm sorry you're having trouble with our compressor.

We've never tested our compressors with a 1/4" impact wrench, all our testing has been done with 1/2" impact wrenches. That said, our compressors will indeed do what no other dc powered compressors can do by a wide margin - run a 1/2" impact, without a tank, under the following conditions:

1. Use a high quality tool from a reputable manufacturer (ie: Ingersoll-Rand, Snap On, etc) that makes efficient use of air, meaning a low CFM consumption rate and a high torque output. Cheap tools will not work well in this application without a tank.

2. Make sure the compressor is getting adequate electrical power. The motor draws 150 amps while the compressor is running. Sure, that's a lot of power, but this is what it takes to get 8 cfm @ 100 psi out of a 12 volt dc compressor. In order to run properly, the electrical system needs to be healthy and configured properly. The less power the compressor gets, the slower the motor runs and therefore the less air it will deliver. Please contact me personally if in doubt, I will be happy to review your power system with you. My toll free number is 888-966-2747.

3. Yes, the trigger needs to be pulled in 2 to 3 second bursts for optimal results without a tank. The good news is you only have to wait 2 to 3 seconds before you can pull it again, and most lug nuts for example will come completely off in one burst.

Following these guidelines, we have tested our compressor using the Ingersoll-Rand IR231 and 2135TiMax 1/2" impact wrenches, with the consistent results of tightening eight 9/16" lug nuts to 150 ft/lbs of torque within one minute of operation. That's huge torque, a job done quickly, and without a tank! Please call me, and I will be happy to help you get the most out of our product. And if the performance still is not up to your liking, we will be happy to issue you a refund directly if you made your purchase within the last 30 days.
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East Greenwich, RI
5 out of 55 out of 55 out of 55 out of 55 out of 5
Oasis Is The Best
For field servicing of our pneumatic tools, we have found Oasis Air Compressors to be superior to anything that we have used in the past.

For reliability and serviceability there is no substitute for Oasis.
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Fort Worth, TX
5 out of 55 out of 55 out of 55 out of 55 out of 5
The Sheriff Has A New Deputy!
Look at how your compressors have helped us: it used to take us an average of 18 minutes to change a flat with a 4-way wrench.

With the compressor and impact wrench it takes us less than 7 minutes (start to finish). When you work on the highways with 60-plus mile per hour traffic this setup reduces our exposure to high speed traffic by 62%.

Talk about a safety story, not to mention that itís less wear and tear on the body.
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Visalia, CA
5 out of 55 out of 55 out of 55 out of 55 out of 5
Blows The Doors Off My Home Compressor
I bought this compressor for my mobile detailing company so we have enough air pressure to blow the water out of the nooks and crannies of the car after it has been washed.

I have my compressor hooked up to a 4.5 gallon tank and the pressure is set at 140 PSI. It only takes a minute to pressurized the tank from 0 to 140 psi.

We have even run an air ratchet off of the setup with no problems!

Yes its pricy, but for a mobile unit that runs off of 12v it blows the doors off my 120v 5hp... more
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Pat M.
Dyer, IN
Purchased from Air Compressors Direct
Purchased 4/18/11
5 out of 55 out of 55 out of 55 out of 55 out of 5
Works Very Good
Works very good...needs a lot of power.
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