TIME-SERT
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Big-Sert 5112D M11 x 1.25 Oversized Metric Thread Repair Kit
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Big-Sert 5112D M11 x 1.25 Oversized Metric Thread Repair Kit
BIG-SERT Oversized Metric Kit M11 X 1.25 Part # 5112D
Big-Sert 5112D M11 x 1.25 Oversized Metric Thread Repair Kit
Item #: 18439523

Big-Sert 5112D M11 x 1.25 Oversized Metric Thread Repair Kit

88% of respondents would recommend this to a friend

Item #: 18439523

BTN 26924

Price Details

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*All items will import from US

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Order now and get it around Wednesday, September 30
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BIG-SERT Oversized Metric Kit M11 X 1.25 Part # 5112D
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What Stands Out

Oversized Threads
The Big-Sert 5112D features oversized M11 x 1.25 threads, allowing effective repairs for stripped or damaged threads, ensuring durability and a secure fit for long-lasting use.
Comprehensive Kit
This metric thread repair kit includes all necessary tools for complete repairs. It simplifies the process for users, making it an ideal choice for DIY enthusiasts and professional mechanics alike.
Enhanced Durability
Crafted from high-quality materials, the Big-Sert promotes strength and resistance to wear, providing a reliable solution for thread repairs that withstands heavy use and harsh conditions.

Product Details

Shop the Big-Sert 5112D M11 x 1.25 Oversized Metric Thread Repair Kit at Ubuy Bhutan. Restore stripped or damaged threads with this high-quality kit. Suitable for Nissan blocks and comes with essential tools and inserts.
  • BIG-SERT Oversized Metric Kit M11 X 1.25 Part # 5112D M11x1.25
  • Designed for repairing failed HELICOIL
  • Includes drill, counterbore, tap, tap guide, sealer, installation driver, 5 inserts (30mm length)
  • Originally made for specific Nissan blocks
  • Suitable for blocks with head bolts starting at the top
  • Short tooling can be used

Who Should Buy?

Suitable For
  • Automotive Technicians

    Ideal for professionals repairing damaged threaded holes in automotive components, ensuring strong and reliable reinforcements.

  • DIY Enthusiasts

    Perfect for home mechanics looking to restore damaged threads quickly and efficiently without needing professional help.

  • Metal Fabricators

    Suitable for metal workers needing to repair threading in various materials, enhancing the integrity of their projects.

Not Suitable For
  • Casual Users

    Not suitable for individuals with minimal experience in threading repairs, as installation may be challenging.

Product Description

Big-Sert 5112D M11 x 1.25 Oversized Metric Thread Repair Kit

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What does the kit include?

    Answer: Drill, counterbore, tap, tap guide, sealer, and installation driver
  • Question: How many inserts are included?

    Answer: The kit comes with 5 inserts, each with a length of 30mm
  • Question: What type of blocks is this kit suitable for?

    Answer: This kit was originally made for some Nissan blocks where the head bolts start at the top
  • Question: Will this work on a 03 dodge neon?

    Answer: This tool is made for Subaru aluminum blocks. Not quite sure if it would work on the dodge neon. If you block is cast steel you can probably use helicoils.
  • Question: Will this work on a Chevrolet 5.3 engine?

    Answer: No, the thread is only for import.
  • Question: Will this work on a 05 camry cylinder head?

    Answer: No, the threads start too deep inside the block. For a first time repair, use Time-Sert kit p/n 2200. For a second time repair used after a failed coil insert style repair use Time-Sert/BIG-SERT kit p/n 2200BS.

TIME-SERT Metric Inserts & Kits Editorial Review

The Big-Sert 5112D M11 x 1.25 Oversized Metric Thread Repair Kit is a tool specifically designed for Subaru aluminum blocks. It may not work on other types of engines, so it's important to check if it is compatible with your vehicle before purchasing. The kit works by inserting steel inserts into stripped head bolt holes in order to create stronger and more durable threads. One customer mentioned that the counterbore leaves no room for cleaning metal shavings out and that it bores the hole bigger than the cylinder head locator. They also had an issue with the tool breaking because there was no stop on it. However, another customer had a positive experience and found the tool to be well-built and easy to use. They emphasized the importance of taking your time and carefully measuring to ensure success. Another reviewer noted that the kit worked for fixing a stripped head bolt hole but mentioned that it may not be suitable for holes with dowel pins or deep recessed threads. They recommended using the kit designed specifically for Subarus or replacing the engine for a nicer car. Overall, the Big-Sert 5112D M11 x 1.25 Oversized Metric Thread Repair Kit has received mixed reviews. While some customers had success using the kit and found it to be a valuable solution to their problem, others had issues with its functionality and compatibility with their specific engine.

Customer Reviews & Ratings

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Pros

  • Well-built and easy to use
  • Can fix stripped head bolt holes and create stronger threads
  • Offers a solution for aluminum blocks that would otherwise require replacing the entire engine

Cons

  • Not compatible with all types of engines

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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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BTN 26924

Order now and get it around Wednesday, September 30

QTY:

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

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Fastest cross-border delivery

Features & Benefits

  • Oversized repair for failed helicoil
  • Includes drill, counterbore, tap, tap guide, sealer, and installation driver
  • Comes with 5 inserts, 30mm length
  • Perfect for some Nissan blocks with head bolts starting at the top
  • Short tooling can be used

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