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ACDelco G12 Series 3/8″ Cordless Impact Wrench ARI12104

ACDelco G12 Series 3/8″ Cordless Impact Wrench ARI12104

Best price now

$69.99at eBayVerified

53% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the ACDelco G12 Series 3/8″ Cordless Impact Wrench ARI12104

The ACDelco ARI12104 is a compact 12V cordless impact wrench with a 3/8-inch square drive, rated at 99 ft-lbs of max torque and 0-2,400 RPM. It weighs under 2 lbs and is 6-1/4 inches long, so it fits in tight engine bays and overhead work. It runs on ACDelco's G12 2.0Ah Li-ion battery system and includes an LED light and battery gauge. The best new price is $69.99 at eBay as of November 4, 2026, with 3 stores listing it new.

Best forLight automotive work like lug nuts on small carsAssembly and disassembly of brackets and panelsDIYers already on the G12 battery platformOverhead or tight-space jobs where weight matters
Pros
  • Light at 1.98 lbs, easy to hold one-handed
  • Short 6-1/4-inch body reaches tight spots
  • Variable speed trigger plus LED light and battery gauge
  • 3/8-inch square drive takes standard impact sockets
  • Shares G12 batteries with other ACDelco 12V tools
Cons
  • 99 ft-lbs is light for stubborn or rusted fasteners
  • No battery or charger included in this listing
  • 2.0Ah pack limits runtime on heavy use
  • 12V class trails 18V and 20V tools on torque

ACDelco G12 Series 3/8″ Cordless Impact Wrench ARI12104 prices at every store

  • ToolSourceNew

    In stock

    $170.61+ $17.95 shippingObserved at 11:32 AM
    Visit store
  • GarageAutoEquipment.comNew

    In stock

    $149.14+ $167.00 shippingObserved at 11:32 AM
    Visit store
  • eBayNew

    Availability unknownSold by ronyaomkstore (100% positive, 35 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $69.99+ $2.99 shippingVerified
    Visit store

ACDelco G12 Series 3/8″ Cordless Impact Wrench ARI12104 price history

Lowest price we've seen: $149.14 on Nov 4 at GarageAutoEquipment.com. Tracked across 2 stores since Nov 4.

What reviewers say

Owner feedback on the ACDelco G12 impact wrench is generally positive for light duty. Users like the low weight and compact size for engine and interior work. The common complaint is that it stalls on tight or corroded bolts.

Pros
  • Very light and easy to handle
  • Fits where larger impact wrenches won't
  • LED light helps in dark engine bays
  • Good value for the price
Cons
  • Not enough torque for lug nuts torqued high
  • Battery drains quickly under load
  • Bare tool means extra cost for battery and charger

From GarageAutoEquipment.com

  • G12 Series Li-ion 12V 3/8" impact wrench
  • 90 ft-lb torque

About the ACDelco G12 Series 3/8″ Cordless Impact Wrench ARI12104

ACDARI12104 - G12 Series Li-ion 12V 3/8" Impact Wrench

Specifications

Voltage
12 VdcSource
Drive Size
3/8" SquareSource
Max Torque
99 ft-lbs (120 Nm)Source
No Load Speed
0-2,400 RPMSource
Impact per Minute

Questions and answers

Is 99 ft-lbs enough for lug nuts?
It can loosen lug nuts torqued to around 80-90 ft-lbs on small cars, but it will struggle on trucks or over-torqued nuts. Use a breaker bar for anything tight.
Does it come with a battery and charger?
No. This is a bare tool. You need the AB1207LA 2.0Ah G12 battery and the ADC12US07-99 charger, sold separately.
What sockets fit it?
It uses a 3/8-inch square drive, so standard 3/8-inch impact sockets fit. Use impact-rated sockets, not chrome hand sockets.
How does it compare to an 18V impact wrench?
It is much lighter and smaller but has far less torque. An 18V tool handles suspension and truck lugs; this one suits light fasteners and tight spaces.
Is $69.99 a good price?
At $69.99 at eBay as of November 4, 2026, it is the lowest of the 3 new listings. Remember to add the cost of a battery and charger if you don't own G12 tools.
Where is the ACDelco G12 Series 3/8″ Cordless Impact Wrench ARI12104 cheapest?
At eBay, for $69.99, 53% under what the other stores charge, as of our latest check.
Where can I buy the ACDelco G12 Series 3/8″ Cordless Impact Wrench ARI12104?
3 stores we checked sell it, including eBay, GarageAutoEquipment.com, ToolSource.

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0-3,100 IPMSource
Tool Weight
1.98 lbs (0.99 kg)Source
Length
6-1/4"Source
Battery
AB1207LA Li-ion 2.0AhSource
Charger
ADC12US07-99Source
LED Light
YesSource
Battery Indicator
YesSource
Motor Torque
90 ft-lbs max. torque
Power Source
Cordless
Power Voltage
12V
Torque Range
90 ft-lbs max
Speed Range
0-2,400 RPM (no load speed)
Speed Control
Variable speed
Battery Voltage
12V
Battery Type
Li-ion
Battery Capacity
2.0 Ah
Number Of Batteries Included
0
Chuck / Drive Size
3/8 inch
Chuck / Drive Type
Square drive
Chuck / Drive Subtype
Square