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Front Subframe Nut Part #

krisk

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Does anyone know the Ford part number for the front subframe nuts? They are a single use part per the service manual, but I cannot find the part number or where to purchase replacements. @LevittownFordParts are you able to help?

S650 Mustang Front Subframe Nut Part # Screenshot 2026-06-17 075926
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Alex381

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Does anyone know the Ford part number for the front subframe nuts? They are a single use part per the service manual, but I cannot find the part number or where to purchase replacements. @LevittownFordParts are you able to help?

Screenshot 2026-06-17 075926.webp
If you call the parts office of your ford dealer, tell them your vin and what you have here, they’ll be able to tell you the exact part number for those nuts.
 
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krisk

krisk

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I'm 99% sure I found the part. W707246-S440

This is the part number listed on the Dark Horse R parts documentation, and the K Member bolts match with the part number listed for the S650. Since the bolts are the same, I'm assuming the nuts will be as well.

S650 Mustang Front Subframe Nut Part # Screenshot 2026-06-17 102920
 
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krisk

krisk

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For reference in case someone in the future is searching for the part numbers. Here they are :

Front Subframe Bolts: W711810-S439 (Qty 4)
Middle Subframe Bolts: W711805-S439 (Qty 4)
Nut for Front/Middle Bolts: W707246-S440 (Qty 8)
Rear Subframe Bolts/Washers: W717325-S439 (Qty 4)

Somewhat odd, but the Dark Horse R parts list has the W711810-S439 listed as rear K member and S711805-S439 as front K member. However, the locations I have marked on the picture below is what the Ford parts guide shows for the locations of the parts.

S650 Mustang Front Subframe Nut Part # Screenshot 2026-06-17 104321
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