---
product_id: 1980999
title: "Heli-Coil 5546-8 M8 x 1.25 Metric Coarse Thread Repair Kit"
brand: "helicoil"
price: "A$77"
currency: AUD
in_stock: true
reviews_count: 8
category: "Helicoil"
url: https://www.desertcart.com.au/products/1980999-heli-coil-5546-8-m8-x-1-25-metric-coarse
store_origin: AU
region: Australia
---

# 12 precision inserts included M8 x 1.25 metric coarse thread Complete tap & installation tool set Heli-Coil 5546-8 M8 x 1.25 Metric Coarse Thread Repair Kit

**Brand:** helicoil
**Price:** A$77
**Availability:** ✅ In Stock

## Summary

> 🔧 Fix it right, fix it tight — the pro’s choice for thread repair!

## Quick Answers

- **What is this?** Heli-Coil 5546-8 M8 x 1.25 Metric Coarse Thread Repair Kit by helicoil
- **How much does it cost?** A$77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/1980999-heli-coil-5546-8-m8-x-1-25-metric-coarse)

## Best For

- helicoil enthusiasts

## Why This Product

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

## Key Features

- • **Durable Material:** Crafted from premium steel for long-lasting thread strength
- • **All-in-One Tooling:** Includes Heli-Coil tap and installation tool for seamless use
- • **Trusted Performance:** Top-rated by pros for automotive and industrial thread repairs
- • **Precision Repair Kit:** 12 high-quality inserts for reliable thread restoration
- • **User-Friendly Design:** Clear instructions and easy installation save you time

## Overview

The Heli-Coil 5546-8 M8 x 1.25 Metric Coarse Thread Repair Kit offers a complete solution with 12 durable steel inserts, a precision tap, and installation tool. Designed for quick, reliable restoration of stripped threads in automotive and industrial applications, it ensures professional-grade repairs with minimal effort.

## Description

Heli-Coil 5546-8 M8 x 1.25 Metric Coarse Thread Repair Kit

Review: Works - Used in front spindle of TJ to hold caliper. Worked perfectly
Review: A aluminum transmission case saver - Excellent product for the 4 stripped out transmission fluid pan bolts on a 41AE/41TE A604 Transmission case. These 8 X1.25 X 16mm fasteners are steel mated to an aluminum transmission case and it does not take much to strip out threads. USes 31/63" drill but not included. I use a Cobalt Irwinn. For the application, I prefer these over Threadsert (besides some snapping in half or giving way at lower psi than the Helicoil as evidenced on Torque Test Channel on YT) They also are a cinch to install (maybe 4 min each) and also dont require drilling out any really large hole as some other makes or nut inserts. I only wished they came in a whole metric and SAE set

## Features

- The product is 8x1.25Thread Repair Kit
- Includes 12 inserts, complete instructions, Heli-Coil tap and installation tool
- Used for repairing tapped holes
- Made from high quality material
- Comes in a carded package
- Easy to use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002SREP4 |
| Best Sellers Rank | #130,783 in Automotive ( See Top 100 in Automotive ) #71 in Thread Metric Inserts & Repair Kits |
| Brand | Helicoil |
| Customer Reviews | 4.6 4.6 out of 5 stars (552) |
| Date First Available | September 29, 2004 |
| Exterior | Smooth |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.2 ounces |
| Item model number | 5546-8 |
| Manufacturer | Heli-Coil |
| Manufacturer Part Number | 55468 |
| Model | 5546-8 |
| National Stock Number | 5325-01-554-7009 |
| OEM Part Number | 5546-8 |
| Product Dimensions | 5.6 x 0.5 x 3.6 inches |

## Images

![Heli-Coil 5546-8 M8 x 1.25 Metric Coarse Thread Repair Kit - Image 1](https://m.media-amazon.com/images/I/718k3Fgcm5L.jpg)

## Questions & Answers

**Q: Are the inserts stainless steel?**
A: Yes!  If they are some other metal it will say on the package.

**Q: Will these hold well in an aluminum cylinder head to fix 2 stripped rocker holes, and be long enough?Spring psi. is ~450lbs. open.**
A: I don’t know the specs for my psi but I used this set to fix 2 rockers on a 3.1 Chevy engine, worked perfectly.

**Q: I need a heli-coil for an 8 x 32mm motorcycle exhaust header stud of unknown thread pitch, will this product work?**
A: I used one for an exhaust manifold bolt on an Ecotec 2.2L engine (2006 Saturn Vue).  It was easily installed.  The hole had gotten out of round and to large for the heli-coil itself, so I drilled the head for a 13mm hole and used a piece of13mm Aluminum bar, a little over 30mm and drilled that out and inserted that heli-coil.  Everything went together without a problem, but it was just recently done, so time will tell if it lasts forever but I don't invision a problem.

**Q: What adapter do I need to fit on the silver thread cutter to be able to turn it?**
A: Use a typical tap handle.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works
*by J***M on November 28, 2025*

Used in front spindle of TJ to hold caliper. Worked perfectly

### ⭐⭐⭐⭐⭐ A aluminum transmission case saver
*by L***S on December 30, 2025*

Excellent product for the 4 stripped out transmission fluid pan bolts on a 41AE/41TE A604 Transmission case. These 8 X1.25 X 16mm fasteners are steel mated to an aluminum transmission case and it does not take much to strip out threads. USes 31/63" drill but not included. I use a Cobalt Irwinn. For the application, I prefer these over Threadsert (besides some snapping in half or giving way at lower psi than the Helicoil as evidenced on Torque Test Channel on YT) They also are a cinch to install (maybe 4 min each) and also dont require drilling out any really large hole as some other makes or nut inserts. I only wished they came in a whole metric and SAE set

### ⭐⭐⭐⭐⭐ it works
*by J***D on November 16, 2025*

saved me bigtime stripped hole on reman engine

## Frequently Bought Together

- Heli-Coil 5546-8 M8 x 1.25 Metric Coarse Thread Repair Kit
- Heli-Coil Helicoil 5546-6 M6 x 1 Metric Coarse Thread Repair Kit
- Heli-Coil 5546-10 M10 x 1.5 Metric Coarse Thread Repair Kit, Factory

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-18*