Built for tight spaces and long workdays, the Milwaukee M12 FUEL™ 3/8″ Subcompact Impact Wrench Kit with Friction Ring delivers serious power in a compact form factor. At just 4.5” long and weighing only 1.6 lbs (bare tool), this impact wrench offers the best access in underhood and confined areas, making it a go-to for automotive repair professionals and industrial technicians. Despite its small size, it delivers up to 225 ft-lbs of nut-busting torque and operates up to 30% faster than previous models, giving users a performance upgrade without adding bulk to their tool belt. The built-in Tri-LED work light increases visibility, and the 4-Mode DRIVE CONTROL™ system—including auto shut-off and bolt removal modes—adds precision and safety during repetitive fastening jobs.
This subcompact impact wrench is designed for trades where torque, speed, and maneuverability are critical. From automotive mechanics working in crowded engine bays to fleet service techs handling daily maintenance on heavy-duty vehicles, this tool reduces fatigue without compromising torque. Technicians in manufacturing and maintenance settings will also benefit from the single-handed mode switching and the friction ring, which enables quick socket swaps during high-volume tasks. With two M12™ REDLITHIUM™ High Output™ CP2.5 battery packs, a fast charger, and a contractor bag included, this kit is ready for heavy daily use.
Milwaukee M12 FUEL 3/8″ Subcompact Impact Wrench Kit At a Glance
- Best Underhood Access: 4.5” length and 2” width fits into tight engine compartments and confined mechanical areas.
- Up to 225 ft-lbs of Nut-Busting Torque: Handles stubborn fasteners commonly found in automotive and industrial maintenance tasks.
- Lightest Weight in Class: At only 1.6 lbs bare tool, reduces strain on wrists and arms during extended use.
- 30% Faster Application Speeds: Improves efficiency during high-volume fastening work.
- 4-Mode DRIVE CONTROL™: Provides adjustable torque settings including Auto Shut-Off (limits to 15 ft-lbs) and Bolt Removal Mode (slows RPM to prevent drops).
- Tri-LED Work Light: Brightens workspaces evenly with minimal shadows.
- Friction Ring Socket Retention: Allows fast socket changes for frequent size swaps.
- Variable Speed Trigger: Lets you control output precisely for delicate or tough fastening tasks.
- Single-Handed Mode Changes: Improves productivity with quick switching between control modes.
- M12™ System Compatibility: Works with all Milwaukee M12™ batteries and chargers.
Markets
- Automotive Repair Fits easily in tight engine bays and offers enough torque to remove suspension and drivetrain fasteners.
- Fleet Maintenance Delivers portable power for daily servicing of transport trucks and equipment, minimizing tool fatigue.
- Manufacturing & Industrial Maintenance Small frame helps navigate around machinery and reduces downtime with quick mode switches and socket changes.
- City Workers & Public Works Crews Ideal for confined spaces like underground vaults or mechanical rooms in civic infrastructure.
- Trade Schools & Technical Training Lightweight, easy to handle, and safe for new users while still offering professional-grade torque.
- HVAC & Mechanical Contractors Provides torque and size balance ideal for rooftop units, compressor cages, or mechanical rooms.
- Agricultural Equipment Service Compact yet powerful enough to remove stubborn bolts on field equipment without needing extra extensions.
When you’re constantly working in cramped spaces, every inch matters—and every pound saved helps. The Milwaukee M12 FUEL™ Subcompact Impact Wrench cuts down on fatigue without cutting performance. Its lightweight build and small frame make it ideal for city maintenance workers and HVAC professionals who often need to maneuver around tight mechanical spaces. For trade schools and mechanical training programs, it provides new users with an accessible, high-performing tool that matches real-world jobsite conditions. This isn’t just a compact wrench—it’s a smart investment in getting more done, faster and with less effort.
Milwaukee 3049-22 M12 FUEL 3/8″ Subcompact Impact Wrench w/ Friction Ring Kit (2) 2.5 AH Features
- Best access for tight underhood spaces
- Up to 225 ft-lbs of torque power
- Lightweight design for easy handling
- Best Underhood Access
- Up to 225 ft-lbs of Nut-Busting Torque
- Lightest Weight
- 40% Faster Application Speeds
- Mode 1 RPM: 0-1,150; Mode 2 RPM: 0-2,400;
- Mode 3 RPM: 0-3,400; Mode 4 RPM: FWD: 0-1,600, REV: 0-3,400 / 0-1,500
- Tri-LEDs deliver high definition lighting to increase workspace visibility with less shadows
- Variable speed trigger for precise control
- 4-Mode DRIVE CONTROL™ provides greater control over output speed and power. Includes auto shut-off and bolt-removal mode
- Auto shut-off mode prevents over tightening and increases productivity by applying no more than 15 ft-lbs. of torque.
- Friction ring socket retention system: Reduces downtime on applications involving frequent changing of accessories
- Compatible with all M12™ batteries & Chargers
- Single-handed mode changes for increased productivity
- Mode 1 IPM: 0 – 1,000; Mode 2 IPM: 0 – 3,400
- Mode 3 IPM: 0 – 3,600; Mode 4 IPM: 0 – 3,600
Milwaukee 3049-22 M12 FUEL 3/8″ Subcompact Impact Wrench w/ Friction Ring Kit (2) 2.5 AH Includes
- (1) M12 FUEL™ 3/8″ Subcompact Impact Wrench w/ Friction Ring (3049-20)
- (2) M12™ REDLITHIUM™ High Output™ CP2.5 Battery Pack (48-11-2425)
- (1) M12™ Lithium-Ion Battery Charger (48-59-2401)
- (1) Belt Clip
- (1) Contractor Bag
Milwaukee 3049-22 M12 FUEL 3/8″ Subcompact Impact Wrench w/ Friction Ring Kit (2) 2.5 AH Specifications
- Torque Output: Up to 225 ft-lbs (Nut-Busting Torque)
- Length: 4.5 inches
- Width: 2.0 inches
- Weight: 1.6 lbs (bare tool)
- Drive Size: 3/8″ with Friction Ring
- Speed Modes: 4-Mode DRIVE CONTROL™
- RPM (Mode 1-4): 0-1,150 / 0-2,400 / 0-3,400 / FWD 0-1,600 | REV 0-3,400 then 0-1,500
- IPM (Mode 1-4): 0-1,000 / 0-3,400 / 0-3,600 / 0-3,600
- Lighting: Tri-LED Work Light
- Battery Compatibility: Milwaukee M12™ System
- Warranty: 5-Year Tool / 3-Year Battery Limited Warranty
Milwaukee 3049-22 M12 FUEL 3/8″ Subcompact Impact Wrench w/ Friction Ring Kit (2) 2.5 AH Warranty
- Milwaukee’s 5 Year Tool / 3 Year Battery Limited Warranty
Why Customers Choose the Milwaukee 3049-22 M12 FUEL™ 3/8″ Subcompact Impact Wrench w/ Friction Ring Kit
This Milwaukee M12 3/8” Subcompact Impact Wrench with Friction Ring is a go-to for anyone who needs high torque in hard-to-reach spots. It’s known around garages and shops as a “nut buster” that won’t wear out your wrist halfway through the job. Whether you’re spinning off brake caliper bolts or dealing with corroded fasteners under a chassis, this tool gets it done with no extra attachments needed. It’s perfect for those who need “just enough power” in “not enough space”—and it keeps turning heads for its speed, size, and everyday reliability.
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