Header bolts for 2017 GT

[17gt_charlotte]

Want to buy some header bolts but I can not find any concrete information on what thread pitch I need. I hear 1.25 and 1.5, which ones have you guys ran on your 17 GT’s? Thanks

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[Mdtaylorjr]

I just reused most of the oem studs on mine with the exception of the rear left upper one. The header manufacturer included a shorter stud for this location due to the oem one hitting the pipe. I couldn't tell you what size it was.

 

[Rollin']

I used a 10mm-1.25 tap to clean the threads before I put my header bolts in. Hope that helps. Cheers

 

[17gt_charlotte]

I used a 10mm-1.25 tap to clean the threads before I put my header bolts in. Hope that helps. Cheers

Did you have a 17?

 

[17gt_charlotte]

Well I ended up getting the 1.5 thread pitch. Hope it works lol. I looked on Stage8’s website and it said that early production models has the 1.25 pitch, so I figured with a 2017 it should be 1.5 thread pitch. We shall see.

 

[Rollin']

Did you have a 17?

Yes 2017 built 11/2016. Hope you have an easy time of your modifications. Cheers

 

[JohnVallo]

Want to buy some header bolts but I can not find any concrete information on what thread pitch I need. I hear 1.25 and 1.5, which ones have you guys ran on your 17 GT’s? Thanks

I understand that all 2015-2020 5.0, and 5.2 Mustangs use the same 10MM x 1.25MM thread pitch.

I have a set to sell if anyone is interested.

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