---
product_id: 256608299
title: "ACDelco ARM303-4A-340 1/2” (12.5 to 250.7 ft-lbs.) Heavy Duty Digital Torque Wrench with Buzzer and LED Flash Notification – ISO 6789 Standards with Certificate of Calibration"
brand: "acdelco tools"
price: "$794"
currency: NZD
in_stock: true
reviews_count: 6
category: "Ac Delco Tools"
url: https://www.desertcart.nz/products/256608299-acdelco-arm303-4a-340-1-2-12-5-to-250
store_origin: NZ
region: New Zealand
---

# LED + buzzer torque alerts Battery powered, 2 AA batteries 12.5-250.7 ft-lbs torque range ACDelco ARM303-4A-340 1/2” (12.5 to 250.7 ft-lbs.) Heavy Duty Digital Torque Wrench with Buzzer and LED Flash Notification – ISO 6789 Standards with Certificate of Calibration

**Brand:** acdelco tools
**Price:** $794
**Availability:** ✅ In Stock

## Summary

> 🔧 Torque Like a Pro, Shine Like a Boss!

## Quick Answers

- **What is this?** ACDelco ARM303-4A-340 1/2” (12.5 to 250.7 ft-lbs.) Heavy Duty Digital Torque Wrench with Buzzer and LED Flash Notification – ISO 6789 Standards with Certificate of Calibration by acdelco tools
- **How much does it cost?** $794 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/256608299-acdelco-arm303-4a-340-1-2-12-5-to-250)

## Best For

- acdelco tools enthusiasts

## Why This Product

- Trusted acdelco tools brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ergonomic Powerhouse:** Lightweight alloy steel body with soft grip handle reduces fatigue during long projects, blending comfort with industrial strength.
- • **All-Inclusive Pro Kit:** Comes with a rugged hard-shell case, calibration certificate, and user manual—everything you need to own your craft confidently.
- • **Multi-Unit Versatility:** Switch seamlessly between ft-lbs, in-lbs, N-m, and Kg-cm to match any job or international standard with ease.
- • **Precision Torque Mastery:** Achieve exact torque from 12.5 to 250.7 ft-lbs with ±1.5% accuracy for professionals who demand perfection.
- • **Smart Alerts for Flawless Work:** Stay on point with audible beeps and LED flashes that confirm your torque instantly—never second guess your work again.

## Overview

The ACDelco ARM303-4A-340 is a heavy-duty digital torque wrench engineered for precision and durability, offering a wide torque range of 12.5 to 250.7 ft-lbs with ±1.5% accuracy. Featuring a clear LCD, multi-unit measurement modes, and smart buzzer plus LED alerts, it’s designed for professionals in automotive and industrial fields. Its ergonomic alloy steel body ensures comfort during extended use, while the included calibration certificate and protective case guarantee reliability and longevity.

## Description

The ACDelco Brand has been around well over 100 years and its name has become synonymous with quality & reliability. ACDelco power tools are built for people who make a living with their tools, day in and day out, and require exceptional sturdiness and reliability. ACDelco offers the most complete line of digital torque wrenches and adapters for professionals who require high precision measurement on torque (ft-lbs./Nm/Kg-cm/in-lbs.) and angle degree for their job. Please use selection guides to choose the right digital torque wrench with right torque range for your application.FEATURESStatic torque measurementStandard functions: torque setting, measurement setting, mode settingOperation in both clockwise and counterclockwise directionsLCD display shows (Kg-cm, N-m, in-lbs., ft-lbs.) measurementsTorque Measurement Range]: 12.5 – 250.7 ft-lbs., Pre-set Accuracy CW +/- 1.5%, CCW +/- 2.5%.Digital torque: reversible, precision geared 72-tooth ratchet head measures torque in clockwise & counter-clockwise directions with anti-slip industrial grade grip design.Audible & visual alert system Specifications - Model Number: ARM303-4A-340 - Head Size: 1/2" - Torque Range: (12.5 to 250.7 ft-lbs.) - Tool Weight: 6.6 lbs. (3.00 kg) - Battery: 2 AA batteries (Not included)

Review: Error message 1 week after use. “Err110” message. Shuts down - Shuts buy itself while torquing which alters calibration and torque values. Have to restart torquing over and over. Error message. Angle torque way off. I bought it august 2023 and have been trying to find their fixing agency or whatever they call it for more than a year. Been emailing here and there just to know wheres acdelco repair but no replies. It is very expensive for something that has no tech support. I feel robbed. Dont buy
Review: Best bang for buck when it comes to Torque Angle Wrenches. Lights, vibration, and beep feedback. Great value for what you get.

## Features

- EASY TO USE Our lightweight, heavy duty, and professional (12.5 to 250.7 ft-lbs.) torque digital torque wrench is engineered with high-quality materials that displays real-time torque values, settings, battery level, measurement modes in (Kg-cm, N-m, in-lbs., and ft-lbs.). Excellent tool for tiny, tight, and narrow working environment, but also reliable torque values that is ideal for professionals, automotive, motor bikes, and many other industrial uses.
- SUPERIOR QUALITY ACDelco is long known for its stellar quality and this tool is no different. It offers speed, accuracy, and an easy to read LCD screen that beeps when a desired torque value is achieved. Our digital torque wrench is also highly efficient, with longer lifespan and industrial grade alloy metal engineered to last years or even decades to come with proper uses.
- USER-FRIENDLY Lightweight composite housing and harden steel alloy body construction with ergonomic soft grip handle design provides comfort for long working hours and a secure grip for maximum control and steadiness. Slim body design molded to securely fit and balance hand torque to help reduce vibration and fatigue with less wear on your hands.
- VALUE KIT Our kit comes with a digital torque wrench, a manual of instructions and guidance, and a hard-shell case that protects and secures the tool once it is done using. This tool is powered by 2 AA batteries (not included).
- For over 35 years we have been manufacturing and providing the best products and services to our customers. We are confident that you will absolutely love our digital torque wrench that we will stand behind our product! you can buy with confidence!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01GOUNZ10 |
| ASIN  | B01GOUNZ10 |
| Batteries | 2 CR2 batteries required. |
| Batteries  | 2 CR2 batteries required. |
| Batteries Included? | No |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Manganese Dioxide |
| Best Sellers Rank | #27,421 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #45 in Torque Wrenches |
| Color | Black/Red |
| Customer Reviews | 4.2 4.2 out of 5 stars (243) |
| Customer reviews | 4.2 4.2 out of 5 stars (243) |
| Date First Available | 1 January 2024 |
| Date First Available  | 1 January 2024 |
| Department  | unisex-adult |
| Finish | Polished |
| Head Style | Fixed Ratchet |
| Included components | Calibration Certification, Digital Torque Wrench, Metal Case, User Manual |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 10 g |
| Item model number | ARM303-4A-340 |
| Item model number  | ARM303-4A-340 |
| Manufacturer | Durofix, Inc. |
| Manufacturer  | Durofix, Inc. |
| Material | Alloy Steel Aluminum |
| Measurement System | Metric |
| Part number | ARM303-4A-340 |
| Power source type | Battery Powered |
| Product Dimensions | 5.08 x 5.08 x 66.68 cm; 10 g |
| Product Dimensions  | 5.08 x 5.08 x 66.68 cm; 10 g |
| Size | 1/2" |
| Style | Wrench |
| Torque | 250 Foot Pounds |
| Voltage | 1.5 Volts |

## Product Details

- **Brand:** ACDelco Tools
- **Colour:** Black/Red
- **Item length:** 66.7 Centimeters
- **Item weight:** 0.01 Kilograms
- **Material:** Alloy Steel Aluminum

## Images

![ACDelco ARM303-4A-340 1/2” (12.5 to 250.7 ft-lbs.) Heavy Duty Digital Torque Wrench with Buzzer and LED Flash Notification – ISO 6789 Standards with Certificate of Calibration - Image 1](https://m.media-amazon.com/images/I/514sKhSL0uL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Can you have a set torque of say 30 ftlbs and then have another saved setting of 70* at the same time?**
A: Yes you can

**Q: If it is shown that the torque readings are not correct, can the torque calibration be adjusted by the owner of the wrench? Or is it non-adjustable?**
A: I don’t think or I don’t know of a feature to calibrate the wrench. On a normal car it is 100lbs. And, it varies depending on make and vehicle. You will have to google it. But, 100lbs it is tight.

**Q: Does  this does angle measurement for engine head bolts  ??**
A: When you power it on, you need to leave it on a flat surface when you see 00000. It is calibrating the Angle accelerometer. If you keep moving it around, it will take forever to boot.

**Q: What size battery ?**
A: 2 AA batteries

## Customer Reviews

### ⭐ Error message 1 week after use. “Err110” message. Shuts down
*by T***H on 21 September 2024*

Shuts buy itself while torquing which alters calibration and torque values. Have to restart torquing over and over. Error message. Angle torque way off. I bought it august 2023 and have been trying to find their fixing agency or whatever they call it for more than a year. Been emailing here and there just to know wheres acdelco repair but no replies. It is very expensive for something that has no tech support. I feel robbed. Dont buy

### ⭐⭐⭐⭐⭐ Review
*by N***C on 10 May 2017*

Best bang for buck when it comes to Torque Angle Wrenches. Lights, vibration, and beep feedback. Great value for what you get.

### ⭐⭐⭐⭐⭐ Review
*by D***N on 15 June 2025*

The ACDelco 1/2-inch Digital Angle Torque Wrench has become one of my go-to tools in the shop, especially for engine and drivetrain work that calls for torque + angle procedures. It’s accurate, easy to use, and built like a tank. The digital display is clear and easy to read, and the beep + vibration feedback makes it almost impossible to overshoot a spec. Whether I’m torquing cylinder heads, flywheels, or axle nuts, I trust this wrench to get it right every time. The angle function is a game changer — no need for an angle gauge or guessing. Just set the torque and angle, and it walks you through both steps. Great for newer vehicles that list torque-to-yield specs in degrees. Battery life is solid, calibration feels tight, and the tool itself has a nice heft without being bulky. It’s also great that it stores torque history and works in ft-lb, in-lb, and Nm for versatility. If you’re serious about precision and work on modern engines or suspension systems regularly, this wrench is worth every penny. It’s not just a torque wrench — it’s a diagnostic tool for fastener integrity.

## Frequently Bought Together

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-11*