Milwaukee M12 Compact Inflator 2475-21XC / 4275-20

Milwaukee Tool is launching an M12 12V Compact Inflator in April! According to Milwaukee, this will be the FIRST cordless inflator capable of filling a light truck tire from “0 to full” on a single battery!

Here’s a few quick highlights:

  • Up to 5X the speed of fill on car & light truck tires (compared to corded & cordless units)
  • First cordless inflator capable of filling a light truck tire from 0 to full on a single battery
  • Tops off standard car tires in under 1 minute!
  • TrueFill Auto Shutoff Technology delivers highly accurate pressure and auto shuts off at desire pressure
  • Anti-vibration stand for no movement while filling

This new Milwaukee M12 tire inflator will be available next month in April 2018 with a retail price of $69 baretool or $159 as a kit with 4.0 battery and charger.

A shout out to Cody Robertson for spotting this before the Official Press Release.

Full Press release below

Milwaukee® Introduces the Fastest Cordless Tire Inflator: Top-Off a Car in Under 1 Minute!

MILWAUKEE, WI- Milwaukee Tool continues to deliver portable productivity by expanding the largest sub-compact system in the industry, the M12™ platform, with the new M12™ Compact Inflator. The fastest cordless tire inflator in the industry, the tool has the ability to top-off a car tire in under 1 minute*. Capable of completing demanding inflation applications such as car, LT truck, and compact equipment tires, the new inflator delivers fast, accurate, easy inflation with the portability to take anywhere.

“The variety of cordless tire inflators available today have, unfortunately, failed to deliver both the speed and range of capability required by users. These inflators are able to fill passenger tires, but are unable to efficiently tackle more demanding applications,” said Tom Simeone, VP of Product Management for Milwaukee Tool. ““Our industry-leading cordless technology allows the M12™ Compact Inflator to complete a wide range of applications from light truck tires (65-80 PSI) to compact equipment (10-80 PSI). As part of the M12™ system, this tool also has the advantage of being completely compatible with the wide range of sub-compact tools available on this platform.”

Rated to deliver over 120 PSI and built with a high efficiency motor and pump, the M12™ Compact Inflator delivers up to 5X the speed of fill on car and light truck tires, ** and can fill a light truck tire from flat to full on a single battery. The REDLINK Intelligence™ with TrueFill™ Auto Shut-Off Technology delivers highly accurate pressure, protects from overfill and overtemp, and automatically senses speed of fill to shut off at the desired PSI. Additionally, a back-lit LCD screen illuminates the digital gauge so users can more easily check the target and current pressure reading.

Weighing just over 3 lbs, the M12™ Compact Inflator is designed with an integrated handle so it can be transported nearly anywhere. A reinforced cage protects it from drops and impact, as well as inclement weather. The backside of the unit features a place to easily store the 26” hose and attachments, including a ball inflation needle, inflatable nozzle, and presta chuck.

The M12™ Compact Inflator’s all-brass chuck creates an easy and reliable connection to tires, preventing leaks. To counter shifting and movement during the filling process, the unit is built with an anti-vibration stand that keeps it in place throughout the duration.

Available April 2018, the new M12™ Compact Inflator joins the largest sub-compact system in the industry, the M12™ platform, now offering more than 90 professional cordless solutions focused on power, productivity, and portability.

*28-35 PSI

**When compared to corded and cordless units


M12™ Compact Inflator (2475-21XC)

  • 0.88 CFM at 0 PSI
  • 0.63 CFM at 35 PSI
  • 0 – 120 PSI Rating
  • Duty Cycle: 50%
  • Gauge Accuracy: +/- 3%
  • Hose Length: 26”
  • Height: 7.5”
  • Width: 6.5”
  • Weight (w/ battery): 5.21 lbs

Includes M12™ Compact Inflator, M12™ REDLITHIUM™ XC4.0 Extended Capacity Battery Pack, M12™ Charger, and 4 attachments: Ball Inflation Needle, Presta Chuck, Inflator Nozzle, and Schrader Chuck.

*Also available as a Bare Tool (2475-20)

About Milwaukee Tool

Milwaukee Tool, founded in 1924, is a global leader in delivering innovative solutions to the professional construction trades that offer increased productivity and unmatched durability. Whether it is through their world-leading M12™ and M18™ cordless systems, the ground-breaking performance of their M12 and M18 FUEL™ products, time-saving accessories, or innovative hand tool products, Milwaukee is dedicated to delivering a steady stream of advanced, trade-specific solutions. Milwaukee Tool is a Brookfield, Wisconsin-based subsidiary of Techtronic Industries Co. Ltd. (TTI) (HKEx stock code: 669, ADR symbol: TTNDY). For more information on the full line of Milwaukee® products, please call 1-800-SAWDUST or visit

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Finally! After years of requests for this by many people they have listened. Might be a bit late for me though as I have swapped to Makita CXT and already bought Ryobis 18v inflator.


Wow, can’t believe somebody other than Ryobi/Craftsman finally made one. All the “pro” brands have said they won’t make a “garage” item because it hurts their image too much. I was recently switching cordless power tool brands and was pondering just using M12 for everything since the tools are more powerful than 18v tools were just a few years ago. The lack of an inflator was the reason I didn’t. I frequently need to air up tires at a race track where there isn’t air available since I don’t want to carry around a big air bubble. Wish I’d known… Read more »


I don’t see how having garage items would hurt their image. If anything it would satisfy needs many people have and keep them from jumping ship to another brand. I’m one of those and I bought the Ryobi 18V cordless inflator several years ago. Probably would have went M12 if they had one back then.


Not too long back a Milwaukee rep stated that they weren’t going to be a ‘me too’ brand and would just be staying true to their pro type tools. I suppose they realised they would have to release other tools that people want or get left behind. Hence the OPE and things like this. Unfortunately tool companies still insist on keeping their upcoming tools releases something akin to a state secret and continue to stay tight lipped about anything forthcoming. Perhaps if they were a bit more free with info and dropped hints etc or just outright said that tool… Read more »


I initially wasn’t going to buy one of these as I had already bought the Ryobi inflator but after seeing one in store, I impulse bought lol.

Early observations after a couple uses are that compared to the Ryobi, it is a little quieter, a little quicker and it doesn’t hop around all over the place when running.


Thanks for the input! Is that comparing it to the Ryobi large inflator or the smaller handheld one?
I have the larger Ryobi inflator that can also inflate HVLP items like air mattresses. It’s a good unit and serves my needs well.


Yes its the large one and I agree that it is a good unit. The only issue that I have had is the low pressure has has split despite only being used twice.

Would love your thoughts, please comment.x