Milwaukee 2551-20 M12 FUEL SURGE 1/4 in. Hex Hydraulic Driver (Tool Only)

Milwaukee Model: miln2551-20
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Milwaukee 2551-20 M12 FUEL SURGE 1/4 in. Hex Hydraulic Driver (Tool Only) Milwaukee Model: miln2551-20
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Product Features & specs :

Milwaukee 2551-20 M12 FUEL SURGE 1/4 in. Hex Hydraulic Driver (Tool Only)

The MILWAUKEE M12 FUEL SURGE 1/4 in. Hex Hydraulic Driver is the industry's first 12V hydraulic impact driver. The FLUID-DRIVE Hydraulic Powertrain's hydraulic impact allows for operation up to 2X quieter with less vibration for smoother and faster driving speeds. Its compact size provides unmatched access in tight spaces and allows for easy transport on a tool belt or in a tool bag. The POWERSTATE Brushless Motor delivers up to 0 - 3,000 RPM with constant power output to drive screws faster. REDLINK PLUS Intelligence prevents damage to the tool and battery caused by overloading or overheating. The cordless impact driver is compatible with all M12 REDLITHIUM Compact Batteries or Extended Capacity Batteries, delivering more work per charge and more work over the life of the pack. The impact driver's 4-Mode DRIVE CONTROL delivers greater control over output speed and power for greater versatility. Self-Tapping Screw Mode reduces walking when self-tapping screws as well as reduces overdriving, breaking and stripping out screws.
  • FLUID-DRIVE hydraulic powertrain reduces metal on metal contact within the tool, delivering quieter operation, smoother performance and increased durability over a standard impact
  • Longer sustained torque delivers similar drive times in application as most 12V impact drivers
  • Up to 2X quieter operation makes this tool ideal for occiped spaces
  • Compact head length and compact battery footprint gives more access than competitive impact drivers
  • POWERSTATE brushless motor delivers maximum power and long motor life
  • REDLINK PLUS Intelligence prevents damage to the tool and battery due to overloading or overheating
  • REDLITHIUM batteries deliver more work per charge and more work over the life of the battery
What’s Included:
  • M12 FUEL SURGE 1/4 in. Hex Hydraulic Driver - 2551-20
  • Belt Clip
  • Battery and charger sold separately
Power Source
UL Safety
Wifi compatibility
Batteries Included
Battery Type
Bluetooth Compatibility
Variable Speed Trigger
Motor Type
Power Settings
CSA Safety
Drive Size
1/4 in
Case Included
Maximum Speed (RPM)
Handle Type
Drive Type
ETL Safety
Battery System
2.913 in.
6.614 in.
7.677 in.
2.589 lbs.
Warranty Term
5 Year

Reviews :

4.9 / 5.0
210 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Would you recommend this product?
Yes (1)
Easy To Use (1)
Ergonomic Design (1)
Powerful (1)
Lightweight (1)
Best Uses
Frequent Use (1)
Jobsite (1)
2nd one for my business
I love these tools, I use both the M12 and M18 but as a remodeling and replacement contractor, compact tools that are easy to use on ladders, in tight places and for the job that takes effort just to get to.
August 25, 2020
Originally posted at
I would buy it over and over again
It is my main use tool, it is so quiet and powerful
August 23, 2020
Originally posted at
I would definitely buy again!!
It has power and punch for days!! I absolutely love the power in a compact
August 22, 2020
Originally posted at
I own 4 of them
This little impact is full of power. I love the quietness of the surge line. I own 4 and use them daily. On of a must have tool in any shop
August 22, 2020
Originally posted at
A must for all around light duty and service work!
The M12 Surge Impact was the perfect tool I needed when I’m out doing service calls, and needed something a lot more compact and quieter than my M18 Brushless Impact driver (2850.

One thing that bugged me was that when I tried to remove the belt clip, the fastener was too tight to remove. I tried my hardest to remove it, and then the screw head snapped off. Although I was able to remove the belt clip, all because I wanted to move it to the other side, all being left handed and all.

Luckily, I had a spare screw from another belt clip that I completely removed from my M12 1/2” Stubby Impact Wrench, and was able to secure the belt clip on the other side.

Not even a week after buying the Surge driver, I accidentally dropped my driver in 3 inches of water as I was working at an outdoor customer site that was flooded from a rainstorm. I immediately took it out of the water, and removed the battery, shook out the water as best as I can. I installed the battery back into the driver, and it still works, 100%! When I got back to the shop, I had let it sit, with the battery out to dry fully overnight, and the next day, it dried, and it still works!

I am very impressed with the Surge Impact driver, and the quality of it. This has further solidified me being a Milwaukee customer for life!
August 22, 2020
Originally posted at
Handy lil' inpact.
I own and use the m18 impact with one key. It's powerful and useful but can be a hindrance in tight spaces and bulky for overhead use. The m12 Surge has become my go to impact. I can carry it without being weighed down. It's slim and compact, helping get into those hard to reach places. I don't really have any gripes about this impact. Works for me.
August 22, 2020
Originally posted at
Nice and quiet
I bought this for the fact it is quieter that my fuel impact and it is. I work as an Hvac tech and am in attics a lot sometimes with sleeping children in the home. It’s quiet enough to not wake some kids but powerful enough to get the job done.
August 17, 2020
Originally posted at
Little Beast
I have been using the M18 version of this unit for years, but thought I would give the m12 a try. It is a beast. I rarely use a regular drill anymore. This unit is a dream to work with and makes life much easier. I cant recommend it enough.
August 16, 2020
Originally posted at
Better than I expected
It does an excellent job for pocket screws and thin plastics, lots of control with this tool.
August 15, 2020
Originally posted at
I really love the hydrolic drive and ergonomics!
The impact drive really helps keep wrist fatigue down and has plenty of power to drive screws in both wood and metal. Its my go too tool now. The #3 setting is not just for metal, I use it on wood and plastic all the time to keep from splitting out the material. Also great for nuts and bolts.
August 15, 2020
Originally posted at

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