---
product_id: 67813101
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: "€ 576.14"
currency: EUR
in_stock: true
reviews_count: 5
category: "Ac Delco Tools"
url: https://www.desertcart.com.cy/products/67813101-acdelco-arm303-4a-340-1-2-12-5-to-250
store_origin: CY
region: Cyprus
---

# ±1.5% high accuracy calibration Battery powered, 2 AA (not included) 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:** € 576.14
**Availability:** ✅ In Stock

## Summary

> 🔧 Torque Like a Pro, Never Miss a Beat!

## 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?** € 576.14 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/67813101-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

- • **Certified Confidence:** ISO 6789 certified with a calibration certificate guarantees consistent precision and reliability on every job.
- • **Precision Meets Power:** Wide 12.5 to 250.7 ft-lbs torque range covers everything from delicate to heavy-duty tasks with professional-grade accuracy.
- • **Versatile & User-Friendly:** Reversible 1/2” ratchet head with anti-slip grip and multi-unit display (ft-lbs, Nm, in-lbs) adapts seamlessly to any project.
- • **Smart Alerts for Flawless Work:** Integrated buzzer, LED flash, and vibration feedback ensure you never miss the perfect torque setting—no guesswork, no rework.
- • **Built to Last, Designed for Pros:** Robust alloy steel construction with a balanced 6.6 lbs weight and a sleek digital interface—your ultimate torque companion.

## Overview

The ACDelco ARM303-4A-340 is a heavy-duty 1/2” digital torque wrench offering a broad torque range of 12.5 to 250.7 ft-lbs with ±1.5% accuracy. Featuring audible and visual alerts, reversible ratchet head, and ISO 6789 certification with calibration certificate, it’s engineered for precision and durability. Powered by 2 AA batteries (not included), this tool is ideal for professionals demanding reliable torque and angle measurements in automotive and industrial applications.

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

## Features

- Versatile Drive Sizes: ACDelco provides options ranging from 1/4" to 1", catering to diverse fastening needs across different equipment and machinery.
- Extensive Torque Range: With torque capabilities ranging from 12 ft-lbs to 250 ft-lbs, these wrenches accommodate a wide array of applications, from delicate adjustments to heavy-duty tightening.
- Professional-Grade Features: Equipped with Peak/Track Modes, Calibration Mode, angle measuring capabilities, and interchangeable drive heads on select models, ACDelco wrenches offer advanced functionalities to streamline professional tasks.
- Precision Calibration: Each wrench undergoes meticulous calibration during production, ensuring consistent and accurate performance across various torque settings.
- High Accuracy: With an accuracy rating of up to ±1.5%, these digital torque wrenches deliver reliable results within a significant percentage of their maximum torque capacity, instilling confidence in users for precise fastening operations.
- ACDelco has a long history of providing quality products. The product comes with a manufacturer's limited 1-year warranty. The company is confident in the product's performance and offers a replacement or money-back guarantee

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01GOUNZ10 |
| Batteries | 2 CR2 batteries required. |
| Batteries Required? | Yes |
| Batteries included? | No |
| Battery Cell Type | Lithium Manganese Dioxide |
| Best Sellers Rank | 108,936 in DIY & Tools ( See Top 100 in DIY & Tools ) 151 in Torque Wrenches |
| Colour | Black/Red |
| Customer Reviews | 4.2 4.2 out of 5 stars (243) |
| Date First Available | 30 Jun. 2016 |
| Finish | Polished |
| Head Style | Box End |
| Included Components | Calibration Certification, Digital Torque Wrench, Metal Case, User Manual |
| Item Package Quantity | 1 |
| Item Weight | 10 g |
| Item model number | ARM303-4A-340 |
| Manufacturer | ACDelco |
| Material | Alloy Steel Aluminum |
| Measurement System | Metric |
| Part Number | ARM303-4A-340 |
| Power Source | Battery Powered |
| 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 Centimetres
- **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

### ⭐⭐⭐⭐⭐ 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.

### ⭐ Review
*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

## Frequently Bought Together

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-02*