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New OEM F250 Supper Duty 7.3 Upper Wiring Harness F81Z-12B637-BA.

For Sale

Engine - Electrical

Oct 14, 2024, 12:05 PM | Replies: 4 | Views: 1134
  • Engine - Electrical - New OEM F250 Supper Duty 7.3 Upper Wiring Harness F81Z-12B637-BA. - New - 1999 to 2003 Ford F-250 Super Duty - Shingle Springs, Ca, CA 95682, United States
    Expired
  • Engine - Electrical - New OEM F250 Supper Duty 7.3 Upper Wiring Harness F81Z-12B637-BA. - New - 1999 to 2003 Ford F-250 Super Duty - Shingle Springs, Ca, CA 95682, United States
    Expired
  • Engine - Electrical - New OEM F250 Supper Duty 7.3 Upper Wiring Harness F81Z-12B637-BA. - New - 1999 to 2003 Ford F-250 Super Duty - Shingle Springs, Ca, CA 95682, United States
    Expired
  • Engine - Electrical - New OEM F250 Supper Duty 7.3 Upper Wiring Harness F81Z-12B637-BA. - New - 1999 to 2003 Ford F-250 Super Duty - Shingle Springs, Ca, CA 95682, United States
    Expired
5th Wheeling
Join Date: Apr 2021
Posts: 39
 

  • Price
    $395
  • Location Shingle Springs, Ca, CA, 95682, USA
  • Condition New
  • Compatibility
Make Model Year
Ford F-250 Super Duty 1999 - 2003
Description:

I purchased a new Ford OEM top engine wiring harness (From Ford) for my truck. The part number F81Z-12B637-BA does not work on the California early 99 model 7.3 engine. The difference is that the early 99 California model has 5 wires that attach to the glow plug relay so the PCM can monitor each glow plug bank separately whereas the later 99-2003 models do not. I believe the F81Z-12B637-BA fits the 99-2003 7.3 models other than California.

Asking what I paid for the harness. Ships in the factory box and I will ship for free to the continental US. Alaska and Hawaii are extra.

Payment accepted through PayPal or cash with local pickup. Call or email at 530-929-7171 or koski19@gmail.com.

Old Dec 11, 2024 | 11:03 AM
  #2  
99.5_Superduty's Avatar
99.5_Superduty
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Did you find the harness for the early 99 with the shunt (5 wires) on the glow plug relay?
 
Old Dec 11, 2024 | 12:51 PM
  #3  
JKoski's Avatar
JKoski
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Thanks for your reply, no, I haven't found a new harness. Need to sell this one first.
 
Old Nov 24, 2025 | 04:27 PM
  #4  
bwguardian's Avatar
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Interesting that it comes with the glow plug relay...
 
Old Dec 4, 2025 | 09:49 AM
  #5  
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Originally Posted by bwguardian
Interesting that it comes with the glow plug relay...
That relay looks like it has been previously installed, along with the wiring...


 




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