A/C compressor bypass

Tiny
STARRSHINE73
  • MEMBER
  • 1999 FORD F-250
  • 7.3L
  • V8
  • 2WD
  • AUTOMATIC
  • 240,000 MILES
Trying to bypass the ac unit. Do I use a smaller serpentine belt and would I route the belt the same way
Monday, November 17th, 2025 AT 11:05 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,591 POSTS
The 1999 Ford F-250 7.3L Powerstroke is one of the easiest trucks to bypass the A/C compressor on, because Ford actually designed the belt layout in a way that lets you run a shorter serpentine belt with no change to the routing.

Serpentine belt: 98.0" length (approx. 2490 mm)

Common part numbers:

Gates K080975

Dayco 5080975

Motorcraft JK8-978

These all fall in the 97.5 - 98.0" range and work perfectly.

Please use 2CarPros anytime we are here to help.
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Tuesday, November 18th, 2025 AT 12:27 PM

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