Helicoil 5334-14 Save-A-Thread Thread Repair Kit M14 x 1.25

I've only used this doing an aluminum head spark plug hole, so I can only give my opinion on aluminum blocks. It was very easy to use. Just insert a 3/8 drive extension the link you need into the combination tap and reamer And then you can attach a ratchet if you like but I chose a 3/8 drive t handle setup so I could put equal pressure turning without putting too much tension laterally on the tap. Just like any other standard tap you do have to back out after a turn or two to clear the thread. If you're trying to do this with the head still on, You're going to want to put some thick bearing grease heavily on the tap to catch any metal shavings and be sure to back it all the way out about every three full revolutions clean it off and go in again. You won't eliminate all shavings from getting in , but the small amount left is pretty easy to get out with a pic with grease on the end and then finally swap to a shop vac with a makeshift piece of small tubing on the end the vacuum down in the cylinder. Check it with a borescope to be sure. You need to install this with a high temp rtv sealant. I went with the permatex That's good to 750° f. I believe I read in the comments somewhere a person saying these inserts were plastic.... Hopefully that person looks at one of my pictures of my special plastic magnet holding up the insert lol. They are steel! Just because something's light and the color is black do not assume something is plastic. After installing it, it has performed falllessly with no leaks And if you install right with the punch tool, the fit of the insert is not an issue and it's not going to come back out on you.

Honestly it worked great! Very easy to use! Just a ratchet and a bit of time! Heck I didn't even take the head of the engine off, just the exhaust muffler to get better access to the bore for cleanup. Just made sure I was able to get every last bit of metal shaving out (For the record I did coat the tap with grease to minimize shavings falling into the bore, but obviously it's not going to get it all).When I finished with the boring/tapping step, and cleaning up the area, all that was left was to put in one of the collars provided! There are 3 different sizes, and if you're fixing a chainsaw, you'll want to use the one smallest in length. Before putting in the collar, I coated the outside of it with a good coat of RTV (I used Permatex's ULTRA Grey). I then screwed the collar in until it was just BELOW flush with the surface, making sure that the "teeth" part of the collar were facing up/out! After seated, I gave it a good couple taps with the provided die using a hammer to expand those teeth on the collar and bite into the threads for a good, solid fit that wouldn't back out anytime soon!So far there hasn't been any troubles with it! It's holding very well!If you've got a stripped spark plug hole, this is a great solution! Definitely recommend!

Replaced spark plug threads in a Kawasaki lawn mower engine that was made of cast aluminum. Worked as expected and mower now has about 20 hours since replacement. Runs great. I had previous experience with using helicoil thread replacements.

Received Helicoil Kit via 2 Day Prime Trial membership! I needed to repair stripped spark plug threads for a 22 inch Toro Recycler (Self Propelled) Lawn Mower (Model 20065, with a Briggs and Stratton 6.5 HP (Quantum Series Engine)purchased back in 2008).This kit fits the Toro perfectly (at least for my model)- I used the shortest insert (kit includes 3 inserts, Short, Normal and Long inserts). Recommend you search on YOUTUBE to watch a good video on this Helicoil application - the video was for an older model of Toro than my lawn mower, however, it covers all the steps (Search: Helicoil 5334 - it is a two part video that has some very good installation tips. Toro must have some Spark Plug thread issues since there appears to be a lot of documented repair work on this!! Toro, are you reading this!Some other items you may need to purchase for the repair work: 1. PERMATEX Ultra Grey Rigid High Torque RTV Silicone Gasket Maker, or something similar (this is needed to set the new thread kit - if I had watched the YOUTUBE video prior to my Helicoil purchase, I would have ordered the RTV with the Helicoil kit from Amazon - much better prices at Amazon. 2. A can of Liquid Wrench - which I already had in my garage. 3. Bench vise (strongly recommended, however, you can work around not having one.As the YOUTUBE Video shows, you should remove the Cylinder Head to perform this fix - just 8 bolts and some minor obstructions. You will have a lot of metal shavings drop into the cylinder if you do not remove the Head, which will probably create a lot bigger problems for you. All-in-all this was a fairly easy fix, it took me longer to remove the Cylinder Head, than to do the actual Helicoil install. Heads Up: While doing this repair work, one of my cylinder head bolts snapped in two while re-installing (bolt appears to be of cheap quality - nothing is made to last these days!!! - I also noted that I needed a new Cylinder Head Gasket - old Gasket was completely worn out. I now have cylinder bolts and a new gasket on order from Toro - meanwhile I am still able to run my mower with the worn out gasket and only 7 of 8 bolts!I would strongly recommend this Helicoil Repair-a-Thread Kit if you need to fix stripped out spark plug threads for a Toro Lawn Mower - you will not be sorry.

The packaging looks like it was used? Wood fibers,oil but it worked ,wasn't damaged and was cheaper than the auto parts store. I was worried it would go in crooked and wouldn't catch. Took a bit to catch and went in fine. It would be nice if the striking punch was longer

Worked good on my 97 ford 5.4! Still going good 2 years later