2018 GT stock Header bolts size?

[4leghorse]

Ordered TSP headers but lethal performance is sold out of the
( 46 ARP 15.5-18 header bolts) does anyone know the dimensions of these? Lethal doesn’t have any in stock to tell me and ARP can’t tell me anything thanks

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[I Bleed Ford Blue]

Take it from someone who has done a header install, don't waste your money on bolts, just reuse the factory studs and nuts that came on the car.

 

[4leghorse]

Take it from someone who has done a header install, don't waste your money on bolts, just reuse the factory studs and nuts that came on the car.

Will do appreciate it

 

[jmeiers]

On my Kooks headers, I could only reuse 7 studs on the passenger side and 3 studs on the driver side. The stock studs would not clear the primary tubes those 6 spots. I used Stage 8 bolts on those.

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