---
product_id: 38030017
title: "OEMTOOLS 25644 M14-1.25 Fix-A-Thread Spark Plug Saver Inserts Kit, Metric, Restores Damaged Threads for Automotive Repair, Includes Stainless Steel Inserts for High-Demand Applications"
brand: "oemtools"
price: "Rp480327"
currency: IDR
in_stock: true
reviews_count: 8
category: "Oemtools"
url: https://www.desertcart.id/products/38030017-oemtools-25644-m14-1-25-fix-a-thread-spark-plug
store_origin: ID
region: Indonesia
---

# 10 precision M14-1.25 stainless inserts Includes tap & installation tool kit Military-grade 18-8 stainless steel durability OEMTOOLS 25644 M14-1.25 Fix-A-Thread Spark Plug Saver Inserts Kit, Metric, Restores Damaged Threads for Automotive Repair, Includes Stainless Steel Inserts for High-Demand Applications

**Brand:** oemtools
**Price:** Rp480327
**Availability:** ✅ In Stock

## Summary

> 🔧 Fix it like a pro—thread repair that won’t quit!

## Quick Answers

- **What is this?** OEMTOOLS 25644 M14-1.25 Fix-A-Thread Spark Plug Saver Inserts Kit, Metric, Restores Damaged Threads for Automotive Repair, Includes Stainless Steel Inserts for High-Demand Applications by oemtools
- **How much does it cost?** Rp480327 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/38030017-oemtools-25644-m14-1-25-fix-a-thread-spark-plug)

## Best For

- oemtools enthusiasts

## Why This Product

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

## Key Features

- • **Complete Repair Kit:** Everything you need in one compact set—10 inserts, intermediate tap, installation tool, and clear instructions for hassle-free use.
- • **Trusted by Pros & DIYers:** Highly rated for ease of use and reliability, making it the go-to choice for serious automotive maintenance.
- • **All-Material Compatibility:** Engineered to work seamlessly on alloys, steel, plastics, and magnesium—versatility that professionals demand.
- • **Built to Last Under Pressure:** Military and aviation-grade materials ensure your repairs withstand high-demand automotive environments.
- • **Precision Thread Restoration:** Restore damaged spark plug threads with aerospace-grade stainless steel inserts for a flawless fit every time.

## Overview

The OEMTOOLS 25644 Fix-A-Thread Kit offers a professional-grade solution to restore damaged M14-1.25 spark plug threads. Featuring 10 aerospace-quality 18-8 stainless steel inserts and a complete installation toolkit, it delivers durable, precise repairs across multiple materials including alloys and magnesium. Trusted by military, aviation, and automotive experts, this kit combines versatility, longevity, and ease of use to keep your engine running smoothly.

## Description

Product Description OEMTOOLS 25644 M14-1.25 Fix-A-Thread Spark Plug Saver Inserts Kit, Metric, Restores Damaged Threads for Automotive Repair, Includes Stainless Steel Inserts for High-Demand Applications From the Manufacturer OEMTOOLS Spark plug thread repair kits and inserts are designed for rethreading in all materials such as alloys, steel, plastics, magnesium, etc. Specified for military, aviation and other similar usage. Inserts are made from high quality 18-8 stainless steel wire with a diamond shaped cross section wound to the shape of a spring thread.

Review: Great Tool that Works Perfectly! - I used this tool to rethread the spark plug hole on a Toro snowblower and it worked perfectly! I followed the detailed recommendations that Kyle W provided which were extremely helpful. I needed a tool with a blunt nose since I did not have much clearance inside the cylinder head and this fit the bill. That made it a bit more difficult to get started, but if you take you time, keep it straight, and apply even pressure it can be done. Once you get several threads cut it seems to pretty much self guide. I did purchase a T-handle socket wrench as Kyle suggested and I agree that it makes it much easier to cut straight. With a little patience it can be done. This is a great tool and I highly recommend it!
Review: Quality tool for cheap - Functions as advertised. Repaired spark plug thread in lawn mower without removing cylinder head.

## Features

- Military & Aviation Grade: Crafted from high-quality 18-8 stainless steel wire, this kit ensures thread repair in alloys, steel, plastics, and magnesium.
- Versatile Application: Designed for military, aviation, and automotive repair, offering reliable solutions across various materials.
- Comprehensive Kit: Includes (10) M14-1.25 inserts, a quality intermediate tap, installation tool, and easy-to-follow instructions, housed in a sturdy container.
- Durability & Precision: Stainless steel inserts provide a long-lasting repair solution, ensuring threads withstand high-demand usage.
- Customer Endorsed: Positive feedback highlights the kit's effectiveness in thread repair and its ease of use for both professionals and serious DIYers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004FEJJZO |
| Best Sellers Rank | #13,580 in Automotive ( See Top 100 in Automotive ) #12 in Thread Spark Plug Thread Repair Kits |
| Brand | OEMTOOLS |
| Color | Silver |
| Compatible Groove Diameter | 14 Millimeters |
| Customer Reviews | 4.5 out of 5 stars 1,365 Reviews |
| Drive Style | Cross |
| Exterior Finish | Chrome |
| Fastener Type | Insert |
| Finish Types | Powder Coated |
| Global Trade Identification Number | 00076812256447 |
| Grade Rating | Aerospace |
| Included Components | THREAD REP INSERT M14-1.25 |
| Inside Thread Size | M14 x 1.25 |
| Item Diameter | 14 Millimeters |
| Item Dimensions | 1.6 x 1.6 x 0.7 inches |
| Item Type Name | THREAD REP INSERT M14-1.25 |
| Item Weight | 22.68 g |
| Manufacturer | Great Neck Saw |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Metal Type | Stainless Steel |
| Number of Pieces | 10 |
| Screw Head Style | Flat |
| Size Name | M14-1.25 |
| Thread Class | Class 2A |
| Thread Coverage | Fully Threaded |
| Thread Size | M 14 |
| Thread Style | Fully Threaded |
| Thread Type | Unified National Coarse (Unc) |
| UPC | 076812256447 |
| Unit Count | 1.0 Ounce |
| Warranty Description | OEMTOOLS Limited Lifetime |

## Product Details

- **Material:** Stainless Steel
- **Fastener Type:** Insert
- **Thread Size:** M 14
- **Exterior Finish:** Chrome
- **Color:** Silver

## Images

![OEMTOOLS 25644 M14-1.25 Fix-A-Thread Spark Plug Saver Inserts Kit, Metric, Restores Damaged Threads for Automotive Repair, Includes Stainless Steel Inserts for High-Demand Applications - Image 1](https://m.media-amazon.com/images/I/71AXuc7V4IL.jpg)
![OEMTOOLS 25644 M14-1.25 Fix-A-Thread Spark Plug Saver Inserts Kit, Metric, Restores Damaged Threads for Automotive Repair, Includes Stainless Steel Inserts for High-Demand Applications - Image 2](https://m.media-amazon.com/images/I/71tHvBB5aKL.jpg)
![OEMTOOLS 25644 M14-1.25 Fix-A-Thread Spark Plug Saver Inserts Kit, Metric, Restores Damaged Threads for Automotive Repair, Includes Stainless Steel Inserts for High-Demand Applications - Image 3](https://m.media-amazon.com/images/I/71zmY+rKfRL.jpg)
![OEMTOOLS 25644 M14-1.25 Fix-A-Thread Spark Plug Saver Inserts Kit, Metric, Restores Damaged Threads for Automotive Repair, Includes Stainless Steel Inserts for High-Demand Applications - Image 4](https://m.media-amazon.com/images/I/7106ZJZETcL.jpg)
![OEMTOOLS 25644 M14-1.25 Fix-A-Thread Spark Plug Saver Inserts Kit, Metric, Restores Damaged Threads for Automotive Repair, Includes Stainless Steel Inserts for High-Demand Applications - Image 5](https://m.media-amazon.com/images/I/71TfVnR3O5L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Tool that Works Perfectly!
*by J***. on January 5, 2026*

I used this tool to rethread the spark plug hole on a Toro snowblower and it worked perfectly! I followed the detailed recommendations that Kyle W provided which were extremely helpful. I needed a tool with a blunt nose since I did not have much clearance inside the cylinder head and this fit the bill. That made it a bit more difficult to get started, but if you take you time, keep it straight, and apply even pressure it can be done. Once you get several threads cut it seems to pretty much self guide. I did purchase a T-handle socket wrench as Kyle suggested and I agree that it makes it much easier to cut straight. With a little patience it can be done. This is a great tool and I highly recommend it!

### ⭐⭐⭐⭐⭐ Quality tool for cheap
*by T***. on January 10, 2026*

Functions as advertised. Repaired spark plug thread in lawn mower without removing cylinder head.

### ⭐⭐⭐⭐ Not for the inexperienced or faint of hearts...
*by K***W on August 13, 2022*

PROS: 1. It got the job done. 2. It was a cheap kit. 3. The threaded inserts are coated steel. 4. The tap is high enough quality to cut easily, even when some full-thread removal is needed at the bottom of the hole. 5. The head on the tap is 5/8", just like the spark plug (important for deep ports) CONS: 1. The pictured item has a long lead-in, more like a plug tap. What I received has very little lead-in, more like a bottoming tap. This makes it more difficult to get the tap started and, more importantly, to keep it steady and straight as the threads get started. 2. There aren't very good instructions out there for the best use of this type of tool. I've tried to help with that below. Here's some detailed instructions from an experienced engineer, to help ensure a successful repair: Things you will benefit from also having/buying: 1. Micro-attachment kit for your shop vac (basically a reducer, a rubber hose, and a variety of small tips) 2. Loctite 638 (you could use high-temp rtv sealant, but this stuff is the ultimate best option) 3. Axle grease or a similar heavy grease (this is for catching the chips so they don't go into the engine) 4. A sliding T-handle wrench, or a large tap wrench (it's best to do the tapping with two opposed hands for better control and straightness, especially when starting the threads) 5. This may not be needed in your case, but I couldn't get the tap started in my engine without first chamfering the hole a tiny bit more. For this I used my Noga NG3100 countersinking tool. 6. A 5/8" spark plug socket (this is ideal for your spark plugs, too, in case you didn't already know... it has a rubber insert that snugs over the top of the plug so it doesn't just slip out of the socket). 7. A way to retain the tap in the socket is recommended... this could be as simple as a wad of masking tap, some silly puddy, or even some small magnets like I used (I luckily just had the perfect little magnets on-hand for this). 8. A long screwdriver and a thin rag for cleaning (Ideally use something that won't shred apart against the threads, like a torn up t-shirt or something... I used a polyester cleanroom wipe that I had on-hand). 9. A good flashlight or head lamp. 10. Anti-seize compound for the new spark plug (duh?). Instructions: IMPORTANT NOTE: this tap is only good for aluminum heads. Just be sure you aren't trying to tap into a steel block with this tool. It will likely gall up and cause an even bigger problem. ANOTHER NOTE: Plan on the repair taking about 1-2 hours, and then 24 hours for the sealer to cure. Don't skip this cure time. Plan ahead and don't start the engine until 24 hours after completing the repair. 1. Inspect and clean the hole and surrounding area. There will likely be aluminum-thread debris here and there. IMPORTANT NOTE: The old threads need to be completely stripped and cleaned away at the top of the hole for this blunt-nose tap to be able to get started. It's okay if there are still a few threads completely intact at the bottom of the hole, because the front of the tap has a good enough edge grind to function as a crude reamer and clear out that extra material. If that is the case, however, be sure to take very small bites when you get down to that section (tap 1/8-1/4 turn, reverse 1/2 turn to break chip, repeat, repeat). 2. Get your t-handle, extension (if needed), socket, and tap set up and apply a small blob of axle grease to the tip of the tap, as well as a tiny blob of grease in the front of each relief channel ground into the tap. This grease will grab most of the chips as the tap does it's work, keeping them out of the combustion chamber. 3. Try to get the tap started in the hole, it may take quite a bit of pressure and patience. If necessary, chamfering the hole a bit more may help as it did in my case. NOTE: Once the tap starts to bite in, be very mindful of your straightness with the hole and/or spark plug port. It is critical that the threads get started as straight and true as possible. 4. As the tap straightens up in the hole due to the first threads being established, work slowly and pay attention to the force required to turn the tap. If it's an aluminum head and your threads are starting nice and straight, it should never be extreme. 5. Only cut 1-1/2 to 2 threads at a time before carefully backing the tap out and cleaning off the grease and chips. Each time you do this, use the vacuum kit to also clean the chips from the hole. 6. Repeat step 5 until new threads are cut all the way through. As mentioned previously, if there are full threads at the bottom of the hole, take smaller bites and 'break the chip' more often. Also remove the tap for cleaning more often as you will be producing much more chip volume per thread. 7. Use the vacuum kit to reach down into the combustion chamber and vacuum out any metal chips that fell down in there. It's important to get as much of that out as possible to prevent damage to the engine's internal components. 8. Use the screwdriver and rag to clean out the grease and metal fines from the new threads and spark plug port as best as possible. 9. Apply anti-seize compound to a new spark plug. 10. Select the steel thread insert from the kit that most-closely matches the thickness of the threaded section in the head and screw it all the way onto the new sparkplug. 11. Apply a very thin coat of the loctite retaining compound on the outer threads of the steel insert. IMPORTANT NOTE: You need to be careful here. One small drop is more than enough, and the excess should be removed with a wipe or q-tip. You don't want any of this to end up between the insert and the spark plug, and you don't want any of it to drip down into the combustion chamber. 12. Load the spark plug with insert into your 5/8" spark plug socket and extension (if needed). 13. Start the plug with insert into the new, clean threads by hand and make sure it starts straight and does not require excessive force to install. Seat it by hand if possible. 14. Using a torque wrench set to the manufacturer's recommended spark plug torque, fully seat and torque the plug with insert. 15. Grab a beer, pat yourself on the back, and enjoy life for 24 hours, minimum. 16. Get everything cleaned up, put back together, connected, etc. and start the engine! You're done! Hope this helps some brave soul or two...

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-02-27*