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Master Flow MF-1040 Cyclone High Volume Portable Air Compressor

4.3 out of 5 stars 289 customer reviews
| 44 answered questions

Price: $34.99 & FREE Shipping
In Stock.
Ships from and sold by The Pep Boys - Manny, Moe, & Jack.
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  • Portable air compressor powered by your vehicle's 12-Volt socket
  • Inflates up to 150 PSI and delivers 30 liters of air per minute
  • Ideal for cars and standard sized vehicles
  • Includes integrated pressure gauge, coil hose with inflating nozzle, and storage bag
  • Can be modified for permanent installation
5 new from $34.99

Frequently Bought Together

  • Master Flow MF-1040 Cyclone High Volume Portable Air Compressor
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  • RoadPro RP-203EC 12V 12' Extension Cord with Cigarette Lighter Plug
Total price: $41.49
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Product Information

Technical Details

Brand Master Flow
Item Weight 6.2 pounds
Product Dimensions 8.6 x 9.1 x 7.6 inches
Item model number MF-1040
Manufacturer Part Number MF1040

Additional Information

ASIN B000L9AD2K
Customer Reviews
4.3 out of 5 stars 289 customer reviews

4.3 out of 5 stars
Best Sellers Rank #7,348 in Automotive (See top 100)
#11 in Home Improvement > Air Tools > Air Compressors > Portable Air Compressors
#471 in Home Improvement > Power & Hand Tools > Power Tools
Shipping Weight 6 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available November 22, 2006

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Product Description

The Master Flow MF-1040 is a compact portable air compressor that's powered by your vehicle's 12-Volt socket. It's ideal for roadside tire inflation, inflating boating and sports equipment, and other light duty activities. This air compressor is rated to inflate up to 150 PSI and delivers 30 liters of air per minute. It features an integrated air pressure gauge, a coil hose with screw-on inflating nozzle, and a convenient rubber handle for easy transport. The included cigarette lighter power cord can also be modified for permanent installation. This package also includes a convenient storage bag.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Chris Longhurst on January 18, 2009
This inflator is well designed, works quickly and quietly, and comes in a nice storage bag to stow away in your car. It does have one major design flaw which is the purpose of this mini-review : the screw-on valve adapter. Most inflators come with a quick-release type adapter. This one comes with a screw-on adapter. It's good because it means a secure seal, but it also means that it lets a good 2psi of air back out of your tire every time you unscrew it. The problem is that as you unscrew it, the seal is broken with the valve, but the pin in the valve is still held in so air begins to escape. If you're quick, it lets out about 2psi. If you have large fingers, are elderly, or otherwise slow at manipulating small objects in tight spaces, this could let out up to 10 psi while unscrewing it. This makes the whole inflator questionable because whilst the built-in pressure gauge is bang-on accurate while the hose is attached, it's meaningless once you unscrew the valve adapter and let a bunch of air out. In the end you will find yourself over-inflating your tyres by 2 to 3 psi just to compensate for the screw-on valve adapter. It's a shame because otherwise this is one of the best inflators I've owned.
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Tires were running low on air during the cold spell and this little compressor came through ! Small and lite weight its just what the doctor ordered. This unit is easy to hook up and operate. Air gage is attached to read while filling. Unit is made of mostly of steel and not plastic. Unit does not walk away when turned on and is extremely quiet. This is a tool and not a TOY !! 10 foot cord plugs into cigar lighter anywhere for ease of use. 16 foot air hose is great. Total of 26 feet from cigar socket. Case is a nice touch! Takes 1 minute to fill tire. 30 liter per minute flow rate. For cars this unit is great ! If you have a RV or truck you may want to upgrade to 1050. Over all I would rate this unit A+++++. J.T.
Master Flow MF-1040 Cyclone High Volume Portable Air Compressor
Comment 53 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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I purchased this unit for emergency use. Had it in the trunk of my car for about three months. My daughter called to tell me she had a flat tire. I drove to where her car was located. Plugged the unit into her cigarette lighter outlet. It ran for about twenty seconds and stopped. It blew the fuse on her lighter (10 amp. I then tried it on my car's lighter outlet (15 amp) which it also blew.

Tried to return the unit to Pep Boys but since I had opened the box and it was beyond thirty days they wouldn't allow me to return it.

Clerk at Pep Boys said they'd had problems with the unit blowing fuses.
3 Comments 58 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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It will also blow the fuses in your car for the power outlet in which you plug it in. Happened to both my 12V power outlets in my 2011 Hyundai Sonata and my 2004 F-150 XLT.
10 Comments 31 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Was using this to add air to my tires - the third time I used it - the curly yellow air hose split at the top. It has a three year warranty with a company Q Industries that has no phone number. Not sure it is legit. Will try and mail the air hose back with the receipt - but clearly this is not a quality product.
1 Comment 34 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Verified Purchase
This little air compressor takes up very little space and took me from 28-35psi in 30 seconds for each tire. The carrying case is very handy and fits everything in there without any force. Package came with a tire guage and attachments to inflate bikes and mattrasses. No regrets here; beats waiting in line at gas stations for air.
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Verified Purchase
Great, compact, and powerful product. Life and time saver. Had a flat tire in rainy weather, tire and rotors were immersed in wet and muddy ground, no way to use jack on an unbalanced, wet and muddy ground. So left with limited option, coz of rain nd thunderstorm for last 3 days. I use this product on my SUV tire (245p). It just took almost 4 minute to fill the tire (90 percent). I had to use a ups box to get a flat stable, non wet surface.

It is almost as loud as gas station air filer machine. Didn't work on my car charging port but it did work on the cigarette heater port. Thts why i gave it 4 star. Still nice, compact, powerful, affordable, nd life saving product.
1st pic is with zero percent air
2nd pic 60%
3rd pic 90%in almost 4 min
4th pic is to show how compact is the size of the bag compared to average size iron nd the entire product fits in that bag. This product size and bag is almost half the size of my dslr camera
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By BM34M on December 23, 2007
First of all I saw this cheaper at a local auto parts store...Damn!
$13 cheaper...Damn again! I am happy to say that this product works very well and is very fast. I really like the coiled air line which makes the reach even longer and adds a professional looking touch to it. There are only two down sides that I see. One is no quick release lever you have to be quick while unscrewing the air connector or you may lose a half pound of air. 12/30 which means that for every 12min of use it needs 30min for motor to cool according to the manual.

Those two downers should not be a real problem considering how quick it inflates! The screw on method takes me back to the days of the old bicycle air pumps....I'm getting quite used to it plus I don't have arthritis in my fingers. If you do I suggest a kind that has quick release.

Ooops! forgot to mention it comes with a handsome carrying bag nice touch!
Also, very sturdy on the ground doesn't jump around like my old one.
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