My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Heli-Coil 554612 M12 x 1.75 Metric Thread Repair Kit

Part of: Heli-Coil Metric Thread Repair Kit

Other options in this family: Heli-Coil 554610 Heli-Coil 554310 Heli-Coil 554412 Heli-Coil 55466 Heli-Coil 55468

Manufacturer

Picture for manufacturer Heli-Coil

Part Number

554612
12 reviews
Sale Price

$40.84

In Stock (10+)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Heli-Coil 554612 is a complete metric thread repair kit designed to restore damaged M12 x 1.75 threads in aluminum, magnesium, and other soft materials. This professional-grade kit provides a permanent solution for stripped or damaged threads commonly found in cylinder head bolts and drain plugs.

Kit Contents:

  • M12 x 1.75mm Heli-Coil tap for thread preparation
  • Type 2 installation tool for precise insert placement
  • Six (6) stainless steel thread inserts, 18mm length
  • Complete installation instructions

Specifications:

  • Thread Size: M12 x 1.75mm Metric Coarse
  • Insert Length: 18mm (1.5D)
  • Required Drill Size: 31/64 inch
  • Tool Type: 2
  • Application: Cylinder head bolts, drain plugs, and general thread repair

Heli-Coil inserts create stronger-than-original threads and are ideal for high-stress applications in automotive, marine, and industrial equipment. The kit includes everything needed for professional thread restoration, eliminating the need for costly part replacement or oversized fasteners.

Ez Pz

Quick and easy ordering, although, the item shown didn't match the item # . We'll see!

looked for part, found it, ordered it. Quick and easy. Hope it fits.

Just ordered first time . so far so good

I received my part sooner than expected. It was a clone of the factory piece only at a much better price. Quick and easy. No sales tax and it was delivered to the door.

.

appreciate prompt shipping ?

Great price and good company to buy from!

I ordered CV axles from Autoplicity and had them in less than a week! Definitely the best prices for quality product on this item. Will be a return customer for sure!

I was apprehensiveness at first to make a major purchase with Autoplicity due to their extremely low price and lack of reviews. I decided to take the chance and I am very glad I did. I made my order on a Monday morning at 0900 eastern time and my product arrived on Wednesday at 3pm. The item was exactly as described and the most astonishing part is that my purchase was released from the factory less than 45 days ago. I was expecting a model that had been sitting on a shelf for the last year and needed to be updated. That was not the case. I will definitely order from Autoplicity again in the future.

shopping was quick and easy!

Very good price. Super quick delivery. Will def. buy from them again. Highley recomend them

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy