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TIME-SERT M14x1.25 Spark Plug Thread Repair kit p/n 4412-321
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TIME-SERT M14x1.25 Spark Plug Thread Repair kit p/n 4412-321
Fast and reliable repair by Time-Sert M14x1.25 spark plug repair kit
TIME-SERT M14x1.25 Spark Plug Thread Repair kit p/n 4412-321
Item #: 19898575

TIME-SERT M14x1.25 Spark Plug Thread Repair kit p/n 4412-321

86% of respondents would recommend this to a friend

Item #: 19898575

SCR 5150

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*All items will import from US

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What Stands Out

Complete Repair Kit
Includes everything needed for an efficient repair: M14x1.25 inserts and tools to restore spark plug threads, ensuring quick fixes without costly professional help.
High-Quality Inserts
Durable inserts made from premium materials provide a reliable solution, preventing future thread damage and extending the lifespan of spark plug installations.
User-Friendly Design
Designed for DIY enthusiasts and professionals alike, the kit allows for straightforward installation, making precise repairs accessible to anyone, regardless of skill level.

Product Details

Shop TIME-SERT M14x1.25 Spark Plug Thread Repair kit p/n 4412-321 online at a best price in Seychelles. B077YTC4CP
  • M14x1.25 Spark Plug Thread Repair kit for stripped out spark plug threads without removing the head
  • Includes short Time-Sert tooling with 5 spark plug Inserts of 9.4mm & 16.8mm
  • Fast and reliable repair provided by Time-Sert M14x1.25 spark plug repair kit
  • Replenish item B00K244FLO # 44125 for 3/8 reach washer seat plugs
  • Replenish item B00I9D3T8U # 44111 for 3/4 reach washer seat plugs
Package Weight2 Pound

Who Should Buy?

Suitable For
  • DIY Car Owners

    Ideal for home mechanics needing to repair stripped spark plug threads conveniently and efficiently.

  • Professional Mechanics

    Perfect for mechanics who require reliable and durable thread repairs during engine service tasks.

  • Older Engine Restorers

    Useful for enthusiasts restoring classic cars with worn or damaged spark plug threads.

Not Suitable For
  • Non-Mechanical Users

    Not suitable for individuals without mechanical skills or knowledge of engine repairs.

Product Description

TIME-SERT M14x1.25 Spark Plug Thread Repair kit p/n 4412-321

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the M14x1.25 Spark Plug Thread Repair kit p/n 4412-321 used for?

    Answer: The M14x1.25 Spark Plug Thread Repair kit p/n 4412-321 is designed specifically to repair damaged spark plug threads in an engine's cylinder head. Over time, spark plug threads can become stripped or damaged due to wear and tear or improper installation. This kit provides a solution to restore the integrity of the threads, allowing the spark plugs to be securely fastened. Practical scenarios for using this kit include addressing stripped threads in older vehicles or correcting issues in engines that have experienced excessive vibration. With this repair kit, users can maintain engine performance by ensuring proper spark plug function.
  • Question: How do I install the M14x1.25 Spark Plug Thread Repair kit?

    Answer: Installing the M14x1.25 Spark Plug Thread Repair kit involves a few specific steps. First, remove the damaged spark plug and clean the area. Using the drill bit provided, carefully drill out the damaged threads. Then, follow with the tap to cut new threads in the cylinder head. Finally, insert the helicoil or thread insert using the installation tool. This process helps create new threads that can securely hold the spark plug. It's advisable to perform the installation with precision, ensuring that the threads are clean and free of debris for the best fit and durability.
  • Question: What materials is the M14x1.25 Spark Plug Thread Repair kit made of?

    Answer: The M14x1.25 Spark Plug Thread Repair kit is typically made from durable materials such as high-grade steel for the inserts and precision-engineered components for the tools. This quality construction is important to withstand the high temperatures and pressures within an engine. The helicoils, for example, are designed to offer excellent tensile strength and resistance to corrosion, ensuring lasting repairs. Using high-quality materials not only enhances the longevity of the repairs but also helps maintain optimal engine performance by preventing further thread damage.
  • Question: Can I use the M14x1.25 Spark Plug Thread Repair kit on any vehicle?

    Answer: While the M14x1.25 Spark Plug Thread Repair kit is versatile, it is specifically designed for vehicles that use M14x1.25 size spark plugs. It’s essential to verify that the engine you are working on matches this specification before use. Most commonly, it is utilized in a variety of gasoline engines, including many European and Asian vehicle models. By ensuring compatibility, you can successfully repair existing thread damage without causing further issues, ultimately extending the life of your vehicle’s engine.
  • Question: What tools are required to use the M14x1.25 Spark Plug Thread Repair kit?

    Answer: To successfully use the M14x1.25 Spark Plug Thread Repair kit, minimal additional tools are needed. Typically, you will require a wrench for installation, a drill to prepare the damaged threads, and possibly a small ratchet set to manage the insert tool. Some kits come with specific tools included to facilitate the process. Being equipped with the right tools ensures a smooth installation and allows you to achieve a proper thread repair without any complications.
  • Question: Is the M14x1.25 Spark Plug Thread Repair kit suitable for professional use?

    Answer: Yes, the M14x1.25 Spark Plug Thread Repair kit is well-suited for both DIY enthusiasts and professional mechanics. Its design caters to common thread repair scenarios encountered in various automotive applications, making it an essential tool in a mechanic's toolkit. Professionals often appreciate the effectiveness of this kit for fast repairs, thus saving time on engine work while ensuring quality repairs. By using this kit, both amateurs and experts can achieve reliable results on a range of vehicles.
  • Question: How does using the M14x1.25 Spark Plug Thread Repair kit improve engine performance?

    Answer: Using the M14x1.25 Spark Plug Thread Repair kit can significantly enhance engine performance by securing the spark plugs in place, which ensures proper ignition and combustion. When spark plugs are correctly installed and their threads are intact, it leads to efficient fuel combustion, improved engine power, and better fuel economy. On the other hand, stripped or damaged threads can lead to misfires and poor engine performance. Repairing the threads helps restore optimal functionality, making a difference you can feel during drives.
  • Question: What should I do if the spark plug thread is too damaged for repair with this kit?

    Answer: If the spark plug thread is too damaged for repair with the M14x1.25 Spark Plug Thread Repair kit, alternative options may need to be considered. This can involve helicoil systems that are more robust or even replacing the cylinder head if there is significant damage. Consulting with a professional mechanic is often the best route in these cases to explore the best repair or replacement options. Professionals can assess the damage level and recommend the most suitable solution for restoring engine integrity.
  • Question: What makes the M14x1.25 Spark Plug Thread Repair kit different from other thread repair kits?

    Answer: The M14x1.25 Spark Plug Thread Repair kit is specifically engineered to handle the unique challenges associated with spark plug threads. Unlike universal thread repair kits, this kit includes components tailored for M14x1.25 threads, ensuring a precise fit and reliable repair. The quality of the materials and the included tools are also optimized for high-temperature, high-pressure environments typical in automotive applications. This specificity leads to a more effective repair solution that can prolong engine lifespan and performance.
  • Question: Where can I buy the M14x1.25 Spark Plug Thread Repair kit p/n 4412-321 in Seychelles?

    Answer: You can buy the M14x1.25 Spark Plug Thread Repair kit p/n 4412-321 from Ubuy. Ubuy offers a wide selection of automotive repair tools, including this specific spark plug thread repair kit, ensuring you can find exactly what you need for your maintenance projects. Their platform is user-friendly and provides detailed product descriptions to assist in making informed purchases.

TIME-SERT Spark Plug Thread Repair Kits Editorial Review

TIME-SERT M14x1.25 Spark Plug Thread Repair kit p/n 4412-321 is designed to restore damaged spark plug threads efficiently, even on tougher jobs like antique tractor heads. Users rave about the ease of use, with many completing repairs in no time after following basic instructions and watching helpful YouTube videos. The kit comes in a sturdy case and includes high-quality tools, with inserts readily available for replacements. While the instructions could benefit from clearer visuals, the overall quality of the kit offers reliable results over alternatives like helicoils. Overall, it's highly recommended for anyone needing a solid, permanent repair solution.

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Pros

  • High-quality, finely machined tools
  • Compact and sturdy case included
  • Easy to follow with online resources
  • Restores compression effectively and quickly
  • Long-lasting repair and reliable results

Cons

  • Basic instruction sheet could be improved

Platform Trust & Buyer Confidence

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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

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SCR 5150

Order now and get it around Wednesday, September 16

QTY:

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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Short tooling with 5 spark plug inserts
  • Fix stripped out spark plug threads without removing the head
  • Replenish item B00I9D3T8U # 44111 for 3/4 reach washer seat plugs
  • Replenish item B00K244FLO # 44125 for 3/8 reach washer seat plugs

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