New part # (strut-to-wheel spindle bolts and nuts)
11-24-2010, 09:44 AM
#1
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Join Date: Apr 2009
Location: The Rocket City, AL
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New part # (strut-to-wheel spindle bolts and nuts)
For those of you who are planning on changing your front struts or springs and order new one time use only bolts/nuts. Be advised that the strut-to-spindle bolts and nuts part numbers have changed. Do not go by the Ford service manual. After having some problems of my own getting the correct parts I found the following on another Mustang site...
Here are the upgraded part numbers:
W714652-S439 (bolts) & W714653-S900 (nuts)
The old part numbers:
W709870-S439 (bolts) & W711091-S900 (nuts)
There was a thread a while back about a broken spindle and it was said that it most likely came from the strut-to-spindle bolts loosening. This had been confirmed by another source as well. Another source that I talked to (a local racing team that runs the FR500C and FR500S Mustangs) said that they had been advised by Ford to upgrade to these as well to ensure no issues.
Here are the upgraded part numbers:
W714652-S439 (bolts) & W714653-S900 (nuts)
The old part numbers:
W709870-S439 (bolts) & W711091-S900 (nuts)
11-24-2010, 12:31 PM
#2
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Join Date: Dec 2007
Location: Ontario, Canada
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The new bolts are fine thread versus the coarse thread on the old ones.
Torque spec on the new ones is 166 ft lb versus 148 ft lb.
Ford did this as a running change along with some other modifications to the spindle machining.
Torque spec on the new ones is 166 ft lb versus 148 ft lb.
Ford did this as a running change along with some other modifications to the spindle machining.
11-28-2010, 11:33 AM
#6
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Location: Ontario, Canada
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I'm not sure when the production change was made.
What did you torque your bolts up to and how did you decide to use that torque setting?
Can you see the bolt threads well enough to determine if they are fine or course?
FYI - they are defined by Ford as one-time-only use fasteners but you are not the first person to reuse them
What did you torque your bolts up to and how did you decide to use that torque setting?
Can you see the bolt threads well enough to determine if they are fine or course?
FYI - they are defined by Ford as one-time-only use fasteners but you are not the first person to reuse them
Last edited by Sleeper_08; 11-29-2010 at 03:08 PM.
11-29-2010, 02:58 PM
#7
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Location: AZ
Posts: 465
12-01-2010, 09:52 AM
#8
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Join Date: Aug 2009
Location: Wisconsin
Posts: 404
I'm not sure when the production change was made.
What did you torque your bolts up to and how did you decide to use that torque setting?
Can you see the bolt threads well enough to determine if they are fine or course?
FYI - they are defined by Ford as one-time-only use fasteners but you are not the first person to reuse them
What did you torque your bolts up to and how did you decide to use that torque setting?
Can you see the bolt threads well enough to determine if they are fine or course?
FYI - they are defined by Ford as one-time-only use fasteners but you are not the first person to reuse them
I drove the car a summer like that. Anything I should watch out for if they are 1 time reused fasteners?
12-01-2010, 01:42 PM
#9
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Join Date: Apr 2009
Location: The Rocket City, AL
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I also read around various forums if you rally or drag race your car you'll want to replace the bolts with new ones. If you've been running for awhile without any problems then I wouldn't worry about it. Maybe next time you have you front tires off check the torque on the bolts?
12-01-2010, 10:55 PM
#10
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Join Date: Nov 2009
Location: AZ
Posts: 465
I replaced all the suspension fasteners when I lowered my car ... used the course thread strut/spindle fasteners. I'll get the fine-thread fasteners when I eventually replace the OEM struts. I have this puppy to apply the proper 166 lb-ft of torque ... the torque wrench on top goes up to 250 lb-ft.
