ACDelco ANI405A Air Impact Wrench 1/2 Inch
- Item Torque: 500 ft-lb
- Head Style: Fixed Square
- Operation Mode: Pneumatic
- Measurement Standard: SAE (Inch)
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A handheld impact tool from an established automotive brand, weighted for one handed automotive work on stuck or high torque fasteners like lug nuts.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B0041PGNZQModel: ANI405Category: Impact Drivers & Wrenches
Overview
The ACDelco ANI405 is an impact tool weighing about 5.72 pounds, listed under ACDelco's tools line rather than its more familiar automotive parts catalog.
Impact tools deliver rotational force in rapid bursts rather than steady turning force, which is what lets them break loose stuck lug nuts and rusted bolts that a standard wrench struggles with. At 5.72 pounds it sits in the weight range typical of a handheld impact wrench rather than a larger stationary tool.
- ACDelco ANI405 model
- 5.72 pound weight
Who it's for
Suited to automotive work involving stuck or high torque fasteners, such as lug nuts, where a standard wrench or ratchet falls short.
Pros and cons
- Built for high torque fastener work
- Solid buyer rating across a sizable review count
- Power source and torque rating not listed
- Heavier to hold than a standard wrench
Performance notes
Impact mechanisms store energy and release it in short rotational bursts, which lets them free fasteners that resist steady turning force, and the weight here fits a tool meant to be held and aimed rather than mounted.
Specifications
| Brand | ACDelco |
|---|---|
| Model | ANI405 |
| Dimensions & fit | |
| Item Weight | 5.72 poundshigher than 78% of 184 impact drivers & wrenches |
| Item Length | 8 incheslower than 65% of 128 impact drivers & wrenches |
| Spanner Wrench Hook Depth | 0.5 inches |
| Capacity & performance | |
| Jaw Capacity | 0.5 inches |
| Construction & materials | |
| Material Type | Metal |
| Color | Silver |
| Finish Types | Polished |
| Included components | |
| Unit Count | 1 |
| Included Components | Air Hose Adapter, Air Impact Wrench, Lubricant |
| Package Quantity | 1 |
| Warranty & support | |
| Manufacturer Warranty Description | 1 Year Limited Warranty |
| Other details | |
| Item Torque | 500 ft-lbhigher than 58% of 116 impact drivers & wrenches |
| Head Style | Fixed Square |
| Operation Mode | Pneumatic |
| Measurement Standard | SAE (Inch) |
| End Style | Socket End |
| Is Racheting | Yes |
| Is Non Sparking | No |
| Item Type Name | Air Impact Wrench |
| Set Name | Tool Kit |
Closest rivals on specs
VTEK Brushless Cordless Impact Wrench 1/2 in- Item Weight 5.72 vs 6.61 pounds (-13%)
PORTER-CABLE PCC740LA 20V Max Impact Wrench 1/2-Inch- Item Length 8 vs 9.9 inches (-19%)
- Item Torque 500 vs 330 ft-lb (+52%)
Urjoai BS001 1/2 in Brushless Cordless Impact Wrench- Item Length 8 vs 5.9 inches (+36%)
- Item Torque 500 vs 590 ft-lb (-15%)
Frequently asked questions
What is this tool used for?
Freeing stuck or high torque fasteners, such as lug nuts, through rapid rotational bursts rather than steady turning.
How much does it weigh?
About 5.72 pounds.
What brand makes the ANI405?
ACDelco.