ARP header bolts Part #?

[DarkSubRosa]

It looks like some people have ran the ARP bolts on their headers but for the life of me I can't seem to find the part # or what size I need to order and when I called ARP they don't have anything specifically labeled for the Coyote. Any help would be appreciated. I'm OCD and if I can't use the OEM studs for the headers I don't want to use a stud here and there and a bolt here and there. I want to use all studs or all bolts and I prefer to use ARP. Thanks!

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[GTBOB]

Size is 10MM-1.50 X 25MM

 

[GTBOB]

You can use ARP 662-1002. Unfortunately they come in packs of 5. :doh:

 

[DarkSubRosa]

Thanks! That's an odd number per pack but whatever. I'll buy however many I need to get.

 

[DarkSubRosa]

I went ahead and got the 12 pts. Part # below for anyone interested that searches.
ARP 773-1002

*edit* THIS IS THE NEW CORRECT SIZE BASED OFF MY NEWEST POST AT THE BOTTOM

 

[Schu]

ty op

 

[craigsix]

my stainlessworks headers came with very good hardware.

 

[DarkSubRosa]

Just an update on this... the OEM size is NOT 1.5 pitch on the threads. It is 1.25. So I have to order another set of bolts with my car taken apart now. I UPDATED THE CORRECT ARP PART # ABOVE.

 

[Schu]

Ouch... thanks for the update though!

 

[03ramit1]

I see you got it worked out, but I used these on a set of hemi headers, and they never worked loose. I would use them again on a coyote in a heartbeat.

http://www.stage8.com/ford.html

 

[DarkSubRosa]

I see you got it worked out, but I used these on a set of hemi headers, and they never worked loose. I would use them again on a coyote in a heartbeat.

http://www.stage8.com/ford.html

ARP has never let me down, as long as it was the right size :lol:

New bolts are ordered, I'll just have to finish my headers next week.

 

[Schu]

Its funny... they have both 1.25 and 1.5 listed for the Coyote. I wonder why???

 

[DarkSubRosa]

Its funny... they have both 1.25 and 1.5 listed for the Coyote. I wonder why???

Maybe year dependent or something, not sure why they would change the casting for the size of the header bolts thread pitch though. It's 100% 1.25 though for our cars.

 

[Derek@Lethal]

Yeah, the early 2011 Coyote's were a 1.25 thread pitch, late 2011-current is a 1.5 thread pitch. Would be nice for ARP to make a kit, that's for sure. We can also get you guys the Stage8 kits or anything ARP.

 

[DarkSubRosa]

Yeah, the early 2011 Coyote's were a 1.25 thread pitch, late 2011-current is a 1.5 thread pitch. Would be nice for ARP to make a kit, that's for sure. We can also get you guys the Stage8 kits or anything ARP.

My car is a 1.25 but you're saying the current is a 1.5? They must have went back to the 1.25 for 15 or I have an oddball set of heads.

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