14mm Bolt p/n help

[Steve2050]

I'm sick of the clunking in the rear so I am trying to locate the correct 14mm bolts for the IRS sub frame. I called the Ford dealer and gave them a p/n I found on the net but the dealer said it does not check out. Anyone got the right p/n for the proper bolt & nut?
Thanks in advance

 

[SicStang03]

Part #: M14-109Bolt
Manufacturer: Ford

MM carries it

Store :: Mustang Rear Suspension :: Cobra IRS-Specific Parts :: Subframe Bushings :: IRS Subframe Front Mounting Bolt, 1999-04

 

[breoland]

so 14mm bolt = no more clunking??

 

[Steve2050]

so 14mm bolt = no more clunking??

No, but it is the easiest and most inexpensive way to start IMO.

Does anyone have a Ford p/n ?

 

[SicStang03]

so 14mm bolt = no more clunking??

Well, depends on which clunking you are referring to.

There is a lot of slack everywhere in these cars. The 14mm bolts help

 

[Steve2050]

Yea that is for sure. Actually, my wife pointed it out to me that the car sure clunks a lot when I shift. I knew that but for her to notice means it has to get fixed. There are pages and pages of threads referring to the clunky drivetrain on SVTP but no definitive cure. I guess the bolt is a good a start as any.

 

[SicStang03]

Yea that is for sure. Actually, my wife pointed it out to me that the car sure clunks a lot when I shift. I knew that but for her to notice means it has to get fixed. There are pages and pages of threads referring to the clunky drivetrain on SVTP but no definitive cure. I guess the bolt is a good a start as any.

Bolt will help for sure but it's a pain to get in there :bash:

 

[mu22stang]

Ford bolt part #W704939-S426
Ford nut part #N801670-S100

My opinion, either get the 9/16" Grade 8 bolt, or get it from MM...way cheaper. Either way, it's not going to stop the clunk. It's all drivetrain tolerances that cause it.

Look here for more info...http://www.svtperformance.com/forums/suspension-modifications-211/573657-14mm-irs-bolt-question.html

 

[WS6JJP]

just sold a set of 14mm bolts/nuts, thanks Steve2050. Still have a few more sets left if anyone needs them--$10, buyer pays actual shipping.

 

[crunkstang1214]

I used the 9/16 bolt and the clunk is way way better, but not fixed. my 12mm bolts were all eat up because the irs was rocking back and forth.
+1 for a pain to put in.

 

[Nutty 5.0]

Lethal sells them as MM part numbers too FYI.

 

[Steve2050]

Thanks to everyone that helped out with info(SVTP rocks). I did order a set from WS6JJP(John) and will report back as to whether or not the bolts alleviate some clunk.