Nickson 17350 Clamp-A-Stud 1/4'' - 1-3/4', Metallic

broke bolt off in flange between exhaust manifold and catalytic converter, difficult to get to. This part saved me having to remove the exhaust manifold to drill the broken bolt out, saved me a few hours of work. Holding well after 1000 miles.

This is a FANTASTIC product and a huge cost and time saver. I used this on my daugter's 2007 Mazda 6. This is the v6 model. I stripped one of the firewall side manifold bolts that connects to the exhaust pipe under the car. Originally, I had attempted to drill out the stripped bolt but (sadly) as i was drilling the pilot hole to then use to drill out and replace the bolt, the pilot bit broke off in the hole.... A friend suggested a clamp and i came across this NIckson 17350 Clamp which worked perfectly. I was able to tighten it up as tight as the original blot/nut arrangement and it saved me a lot of aggravation and time. Obviously, a corrective measure such as this clamp will work best in an area where you have enough room to affix it to the broken part in question. There was ample room on this make/model of car. I highly recommend this product.

Broke off a turbo bolt going to the exhaust on my 06 volvo xc70, of course in the auto world nothing can be simple. The bolt snapped flush with the turbo housing, so I could not get vice grips on it to try and take it out. Tried drilling it and using a easy out, of course that didn't work.Said screw it and tried to drill the bolt out completely and use a bolt and nut, not much space to get a drill in there and ended up snapping the drill bit off in the center of the bolt, thankfully they make such a thing for this exact scenario and here we are. Worked perfect and has not loosened or fallen off since I put it on a year ago, turbo does not leak.

Worked great for my application. Check closely for clamping surface areas and access to handle.

I wasted plenty of time trying to remove the exhaust manifold studs on my '99 Suburban. First of all, only one nut could be removed. All the other nuts had to be cut off, which meant the studs were ruined. The tiny hex on the end of the stud looks like you should be able to use it to unthread the stud from the exhaust manifold - yeah, right. I tried using PB Blaster, Freeze-Off, a stud extractor...those studs would not budge. I cut them off, and managed to drill holes in two of them with a cobalt drill bit. This was a huge and frustrating effort, just so I could put a bolt through the hole. When the bits kept breaking, I resorted to these Nickson clamps. Well, I should have bought these at the very beginning! They were easy to install. I was concerned they might loosen up and slip off, so I checked them for tightness every day for a few days, but they seem like they are in there for good. This is a brilliant invention. I have three of them installed. Check out the photo.

When exhaust studs get break it can be a real pain in the butt! You can drill them out, but then you need to tap the hole etc etc.The clamp a stud is basically a C-clamp. On one end is a hardened point that goes behind the flange on the exhaust manifold. From the other end is a threaded rod. On this goes a piece with a protrusion that fits in the hole on the pipe flange. The clamp itself is made from cast iron.The manufacturer claims you can sometimes use these when the manifold flange ear is cracked off. That seems plausible to be.The one thing to check is the distance from the back of the exhaust manifold to the outside of the pipe flange. This determines which clamp a stud you will need. I did not know this, and had to order a larger one. Here is the infoPart number17350 1/4" - 1-3/4"17351 1-1/4 - 2-3/4"17352 2-1/4 - 3-3/4"The price on Amazon happens to be extremely good as well!Give me a year or two and I'll post how long these hold up, but I expect they should work very well. And don't forget to coat everything with special high temp lube so you can get it all apart in the future without breaking anything!

Broken on first use. Don't waste your money. The treads are weak.

It said it can be used to remove wheel studs... it can't.