I am trying to find out the name of this bolt and/or the size

2008 CHEVROLET TRAILBLAZER
123,000 MILES • 6 CYL • 4WD • AUTOMATIC
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JLOGO1985
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Cannot find this bolt anywhere.
Dec 23, 2020 at 4:02 PM
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DANNY L
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  • ASE Certified Mechanic
Hello, I'm Danny.

That I'm sure is a valve cover bolt. If you can provide me with your VIN- vehicle identification number I can provide you with a part number and price. Hope this helps and thanks for using 2CarPros. Happy Holidays.
Dec 23, 2020 at 4:47 PM
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CARADIODOC
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That looks like a valve cover stud. What kind of problem are you trying to solve?

If you need one like it for a replacement, the fastest solution is to get one at a salvage yard from a similar engine. That will insure it is the right size and thread pitch, as well as hardness and any special factory coatings to resist corrosion.

If the hole is stripped out, take the bolt to any auto parts store and they will match it up to the correct "Heli-Coil" kit for you. Those come with the correct drill bit to drill the hole larger, the correct tap, which rethreads the hole, and a number of stainless steel inserts along with the tool to run them in. Once the insert is installed, you break off the tang that was used to wind it in, then the inside threads will be identical to what was there originally. You use the original bolt or stud over.

The only thing you have to watch out for is that you wind the insert in all the way so none of it is sticking up to where you would catch your fingernail on it if you slid your finger over it. It it's sticking up, it could hold the cover up from sitting down all the way. If that happens and the tang is already broken off, just grind the excess off so it's flush.
Dec 23, 2020 at 4:49 PM
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JLOGO1985
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I love you! thank you so much. the vin number is 1gndt13s982250324.
Dec 23, 2020 at 4:52 PM
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DANNY L
  • ASE Certified Mechanic
  • 5,648 POSTS
  • ASE Certified Mechanic
Hello again.

This is a valve cover bolt with insulator. They are $19.00 a piece. The Chevrolet part number is #12615912 and are available at any of your local Chevrolet dealerships. Hope this helps and thanks again for using 2CarPros. Happy Holidays.

Danny-
Dec 23, 2020 at 5:03 PM
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