10 Best 12 Mm X 15 Helicoil Kits – Review And Buying Guide

Have you ever wondered what is the best 12 mm x 15 helicoil kits? Well, I did, so I went on a hunt to find out. It turns out that it was relatively hard to do because there are many aspects to consider. Besides, everyone has different needs and preferences. However, after careful research, I was able to create my personal list of the top 12 mm x 15 helicoil kits right now, which I’m going to share with you today.

Finding the best 12 mm x 15 helicoil kits for your budget if you’re looking for some help keeping yourself in shape or need guidance on where to start. This review gives you an overview of your options. There is a lot of 12 mm x 15 helicoil kits on the market; which one should you buy? I’ve reviewed and rated 10 of the most popular products in this article.

A selection process

We analyzed a wide range of 12 mm x 15 helicoil kits to provide a great overview of the current market. Each was objective across a few criteria to determine relative levels of performance. We compare each across the different factors to determine which products are best for specific applications. Based on our expert recommendations, we have selected our top picks:

  • Size
  • Brand value
  • Features
  • Specifications
  • Durability
  • Quality
  • materials
  • Style
  • Design
  • Longevity
  • Consumer ratings & reviews
  • Product price
  • Warranties
  • Types

10 12 mm x 15 helicoil kits: Editor Recommended

10 12 mm x 15 helicoil kits Review:

1. BILITOOLS M12x1.25 Thread Repair Kit, HSS Drill Helicoil Repair Kit Metric

Features :

  • Used for repairing damaged or stripped internal threads and creating a stronger internal thread.
  • Suitable for all metals, composites, polymers and other materials. Our thread repair kit can be widely used in automotive and plumbing applications.
  • 304 Stainless thread inserts create longer lasting durable threads, increase the possibility of higher torque application in weaker metals. 135° apex angle of twist drills, with stronger metal penetration and higher efficiency
  • Thread repair kit includes a collection of tools including HSS drill, tap, thread inserts, installation tool, break pin tool.
  • All the parts are organized in a convenient iron case for easy transport and storage between jobs.
  • Attention: Before you buy this kit, please make sure which size do you need. If you don’t know, Please see the picture 6.

Additional Info :

Color Metric

2. Heli-Coil 554312 M12X1.25 Metric Kit

Features :

  • 6 Inserts Per Kit
  • Metric Fine Thread Repair Kit
  • Package Dimensions: 17.272 L x 2.032 H x 10.16 W (centimeters)
  • Made in China

Additional Info :

Color Factory
Item Dimensions
Height 0.6
Width 3.5
Length 5.9
Weight 0.45

3. WINTOOLS 15 Pc Thread Repair Kit M12 X 1.5 X16.3MM Auto Car Tool Set Helical Coil F04187H

Features :

  • Thread repair kit including wire thread insert sizes M12
  • Ideal for restoring damaged threads, suitable for engine repair and otherautomotive applications for Steel, Cast Iron and Aluminium.
  • SHIPPING-IT will be shipped within 24h, delivery in 7-12 days. Contact us if any problems.

4. Heli-Coil 554412 M12 X 1.5 Metric Kit

Features :

  • Package Dimensions: 6.75 L x 0.88 H x 3.75 W (inches)
  • Package Weight : 0.24 pounds
  • Country of Origin : China
  • Part number: 554412

Additional Info :

Color Factory
Item Dimensions
Height 0
Width 0
Length 0
Weight 0.3

5. AB Tools-Neilsen M12 x 1.25mm Thread/Tap Repair Cutter kit helicoil 15pc Set Damaged Thread

Features :

  • M12 x 1.25mm
  • Helicoil Thread Repair Kit
  • Supplied with three different length inserts
  • Creates stronger internal thread in soft materials
  • Supplied in a blow molded case

Additional Info :

Item Dimensions
Height 1.3779527545
Width 4.1338582635
Length 7.6771653465
Weight 0.98546631114

6. 15 Pcs Thread Inserts M14x1.5 Female Thread Repairing Accessory Assortment Kit Drill Helicoil Repair Kit

Features :

  • Extremely stable performance: This thread helical coil repair tool kit is made of high speed steel and red color plastic handle, sturdy and durable in use and can be used in daily repair, car repair, drilling machine, etc; Made of stainless steel of good rust and corrosion resistant.
  • Excellent practicability: The wire screw set is placed in the screw hole of the workpiece such as aluminum alloy to form a standard internal thread with high strength, wear resistance and high precision. Typical applications: high voltage switchgear, microwave communication, automotive parts, air separation equipment, radiators, etc.
  • Cost effective thoughtful kit: The use of wire screw sleeves for mm —inch threaded hole conversion is convenient and fast. The imported equipment or mechanical inch thread is damaged, and it needs to be changed to mm thread due to the supply of spare parts; All accessories are integrated in a box for convenient transportation and carriage.
  • Definitely recommend: Thread helical coil repair tool kit is ideal for restoring damaged threads, suitable for engine repair and otherautomotive applications for steel, cast Iron and aluminium. This kit helps create a stronger internal thread in soft metals and protects tapped threads against wear and damage.
  • Package list: 1 x Spiral drill; 1 x Screw tap; 1 x Wrench; 1 x Break pin tool; 1 x Hex wrench; 10 x Thread repair insert; Thread Insert Size: M14x1.5; Length: 2D.

Additional Info :

Item Dimensions
Height 0.393700787
Width 0.393700787
Length 0.393700787

7. DEEFILL M14.1-1.5 x 15mm Oversize Piggyback Oil Drain Plug, Stainless Steel Self Tapping Oil Pan Thread Repair Kit

Features :

  • DEEFILL’s oversized, piggyback oil drain plug, made of stainless steel 304 with CNC cutting technology, have enough hardness and precision to re-thread the oil pan.
  • Cost-effective solution, simple installation, eliminate the need to replace the entire pan, saving you time, labor and money. This oversized, piggyback engine oil drain plug matches the fit and function of the original drain plug, and has undergone try-on testing to ensure a quality seal.
  • Ideal replacement – There are several kinds of thread repair tools in the market like Heli-Coil, Time-Sert, or self-tapping bolt and drain plug repair kit. Using these tools to repair oil pan thread is risky and challenge, because you need to be very carefully to align the tap perpendicular to the oil pan before cut the new threads. Or it will leak oil. Using our piggyback oil drain plug to repair your slipped oil pan thread, just a few simple steps to get the job done.
  • Package Include: 1pcs stainless steel self tapping piggyback oversize oil drain plug, specification: M14.1-1.5 x 15mm; 1pcs L Shape Hex Key Allen Wrench (for the piggyback drain plug); 2pcs fluorine o-ring for main plug; 2pcs red copper gasekt for piggyback drain plug;
  • Installation Instructions: Step1. Make sure you clean the oil pan thread area thoroughly, there isn’t excess oil around the area or in the threads. Step2. Thread the piggyback plug into the hole, a few threads forward and then a few back. Once the plug bottoms out, remove it slowly and then use some brake cleaner to clean loose thread material. Step3. Use T-socket wrench, tighten the plug with a torque of around 14ft-lbf.

Additional Info :

8. JMMRRR Thread Repair Kit M12 X 1.25mm, Metric Thread Repair Insert Kit Compatible Hand Tool Set for Damaged Thread and Auto Repairing

Features :

  • 【Package Details Introduce】15 pcs thread repair kit, all made according to professional standard, includes 1 twist drills, 1 screw taps, 1 installation tools, 1 breaking pin tools, 10 thread inserts, 1 hexagon wrench, and a storage box, allow you to have a smooth repairing experience.
  • 【Wide Application】This thread repair kit is for M12 to repair damaged or worn out threads, this kit helps create a stronger internal thread in soft metals and protects tapped threads against wear and damage, ideal for engine repair and other automotive applications.
  • 【Excellent Material】The Compatible Hand Tool Set made from precision stainless steel wire for strength, wearproof and durability which can increase connection strength and fatigue resistance, the handle is made of high-quality rubber, ergonomically designed, non-slip and easy to grip, giving the hand a comfortable feeling.
  • 【High Precision & Intimate Design】Twist drill bits are used 135° top angle design with stronger metal penetration, HSS screw taps have precise screw threads, the drill bits quickly create room for the installation tools to smoothly fit the inserts that repair your old threading and the breaking tool.
  • 【Quick Storage & Portable】Thread repair tool kit with a storage box, each accessory has its place, for easy transport and storage between jobs, the twist drill bits and screw taps engraved with text marks to help you quickly organize and use, which is convenient for your work.

Additional Info :

Color red

9. Thread Repair Insert, 50 PCS SS304 Stainless Steel Coiled Wire Helicoil Thread Repair Insert Assortment Kit M6 x 1.0 x 3D Length

Features :

  • ❃ 【Wear Resistance】 Used for parts that need to be removed frequently, it can greatly improve the life and wear resistance of the screw thread
  • ❃ 【Large connection strength】 Steel thread inserts used in low strength materials such as aluminum or can avoid thread damage and achieve good connection performance to improve connection strength and connection status
  • ❃ 【Preventing screws from loosening】 This can prevent the screw from loosening, especially on products that require a high insurance coefficient
  • ❃ 【Note】 Just wait, insert a threaded insert into a damaged screw hole, then the screw hole can be used as normal to avoid losing the workpiece
  • ❃ 【Fatigue resistance】 Due to a certain elasticity, the thread insert can balance the load distribution on each thread, eliminate slopes and tooth deviations between the screw and screw hole, and absorb vibration, thereby increasing the connection strength of the screw thread and increasing the resistance to fatigue resistance.

Additional Info :

Item Dimensions
Height 0.787401574
Width 1.968503935
Length 2.362204722

10. Orion Motor Tech Metric Thread Repair Tool Kit | HSS Drill Bits Taps Threaded Inserts Installation Tool and Tang Break-Off Tool Set for Repairing M5 M6 M8 M10 M12 Internal Screw Holes, 131pcs

Features :

  • ALL-IN-ONE KIT: This 131-piece thread repair tool kit by Orion Motor Tech includes bits, taps, and inserts in the 5 most needed Metric sizes: M5, M6, M8, M10, and M12
  • PURPOSE BUILT: The installation tools in this helicoil kit are constructed from high-speed steel for superior handling while the inserts are heated-treated 45# steel for greater strength and longevity in place
  • WIDE APPLICATION: Our drill and tap set is ideal for restoring stripped or damaged internal threads as well as for performing maintenance work to protect any threads from wear and tear
  • EASY TO USE: The convenient carrying case holds and organizes all the parts for easy transport and storage between jobs; on the site, the drill bits quickly create room for the installation tools to smoothly fit the inserts that repair your old threading; the breakoff tools clean things up for use
  • SATISFACTION GUARANTEED: Order with your peace of mind assured thanks to Orion Motor Tech’s usual strong warranty and friendly 24/7 customer service

Additional Info :

Color red case

Buying Guide of  12 mm x 15 helicoil kits:

The best way to make the most of your time is to list the things you want to buy, weighing all the factors before deciding. There are many ways this post can suggest that will help you do this and avoid purchasing the wrong product. If you’re in a hurry for some reason, take our word for it don’t buy anything until you’ve finished reading this post! These factors will help you make the right decision when buying a product. Here are some of the things that you should consider before buying a product:

  • Price: How much are you willing to spend on your new product? If money is not an issue, you can choose the most expensive option. However, if you have a tight budget, then it is important to choose one that fits your needs and budget.
  • Durability: You need to consider how long your 12 mm x 15 helicoil kits will last before you buy it. Investing in something that will last longer than buying something that will break down after just a few uses is always better.
  • Quality: The quality of 12 mm x 15 helicoil kits should be considered before buying it. A good product will have high-quality materials used during manufacturing and construction.
  • Brand: The brand reputation of a particular product is also important because it tells you how reliable they are and how they stand behind their products.

Here is a brief description of important factors for buying a product:

Check Reviews

This is a great way to know what other people have experienced with 12 mm x 15 helicoil kits. You can check out user reviews on Amazon or other websites where users can post their thoughts on a product. The best place to look for reviews is on Amazon, which has a star rating system that gives you an idea of how good or bad a product is. If there are enough reviews with bad ratings (less than 3 stars), it’s probably not worth buying that product.

Look at the price

This may seem obvious, but it’s important not to just look at how much something costs and decide that it’s too expensive. Instead, you should compare prices between different sellers and see which offers more value for money! For example, if you find a similar product for $10 cheaper elsewhere, it might be worth buying from that seller instead of the first one you came across!

Type of product

There are many types of 12 mm x 15 helicoil kits you can buy. Some are basic, while others are advanced. You need to determine what type of product you need and then buy one that fits your needs. For example, if you want a simple product, the best choice is a basic one. However, suppose you want something more advanced. In that case, it’s better to get an expensive one because it will have extra features.


The product size also matters when choosing the right 12 mm x 15 helicoil kits for yourself or someone else, as different people have different requirements when using their products. For example, if there is someone who uses large sized products or devices, then he/she would need something bigger than others who use smaller devices or tools. Therefore, it is important that you look at the size of each product before purchasing them so that they can meet all your needs and requirements in terms of size.


You need to buy a branded product because it has been tested and proven effective by many people before you buy it. Brands also have guarantees on their 12 mm x 15 helicoil kits so that if anything happens to your new item within the warranty period, they will repair it or replace it without hassle.


You should consider how long the 12 mm x 15 helicoil kits will last. This is because it is important for you to buy something that will serve your needs for years. If many people have used a particular product without any problem, then it means that it is durable and can serve your purpose well.

Easy to Use

When buying a 12 mm x 15 helicoil kits, make sure that it is easy to use so that you do not experience any difficulties while using it after purchase. Some 12 mm x 15 helicoil kits may look great but are too complicated for your level of expertise or knowledge about them. Make sure that the product is user-friendly so that even someone who does not have much experience can use it comfortably without any problems or inconveniences whatsoever.

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