I like this over a regular helicoil. Steel insert with lock tight already on it. Would have given a 5 but the drill bit is 1/2 inch and not a common size for the average regular or right angle drill. Instructions were good. I bought a 3/8” drive bit and had to use my 3/8 inch 90 degree adapter on my drill. I removed the plenum because initially my 1/2 inch drill body had to much girth and even after removing the passenger side plenum it still touched the engine causing a slight angle. Ugh. A smaller regular or slimmer drill would have been better. Not optimal, but the adapter worked. Suggestion: get a second set of eyes to keep the bit perpendicular from the side while you keep it perpendicular from the top. So much easier. I used the stop collar as a guide with just a little of the bit showing so I could better judge alignment. Then I readjusted the stop collar after it bottomed out about three or four times till I reached the proper depth. This way the hole came out perfect. My first time doing this and it worked. The taps could use descriptions to know which one to start and which one to finish. I googled it. Use 1/4 inch ratchet, easier to handle. HPOP back on and running strong. Thanks for another great product.

I would give it a 5 star except that it is pricey however, it did a great job and my problem was solved.

Wow paying attention to the torque wrench is important haha woops! These saved the day and about 500 smakers!

This kit saved my butt! I thought I was going to have to replace the front cover until I found this kit. Thank you guys for putting this together and shipping so quickly.

The product worked great and everything I needed was included to save the front cover. My only complaint is that the provided drill bit is for a 1/2 drill chuck. I had to go buy a 1/2 jacobs chuck that fit my angle drill to perform this repair. Beyond that headache with the drill and my nerves being shot from trying to be as accurate as possible; IT WORKED!!!!! :)

This worked brilliantly and flawlessly!!! I just wish they made the drill bit to fit 3/8 drive, I had to grind the insert of the but down to fit inside the mouth of the drill. Other than that, zero issues.

Only thing i had a problem with, The drill bit should be 3/8 step down bit. 1/2 inch to big for my angle drill.

I only gave this product three stars because of the difficulty in being able to chuck up the drill in a 90 degree drill motor that will not cause interference with the passenger side of the block in aligning the bit with the hole. I ended up using a 90 degree pneumatic aircraft drill and purchased a jobber length drill bit that was turned down to fit a 3/8” chuck. In order to use this setup with maximum precision I removed the HPOP reservoir and the spider. This constituted more work than I originally anticipated, however, the final results were excellent. There is no spec given for the optimal setting of the drill stop so you need to take care in setting it correctly. A micrometer and depth gauge were of great help. Otherwise, the parts included in this kit are of the highest quality and used carefully this kit will make an excellent repair of stripped out HPOP mounting threads. Good luck!

Good quality taps and drill bit . You can get the inserts at just about any local hardware store for .60 cents a piece . That being said . It was nice knowing I had the correct tooling for the job