Topic Sponsor
1997 - 2003 Ford F150 General discussion on the Ford 1997 - 2003 F150 truck.

Bypass AC are the part #'s

Old 10-10-2017, 08:06 AM
97 F150 XLT
white89gt's Avatar
Join Date: Dec 2015
Posts: 9,329
Received 699 Likes on 663 Posts

Originally Posted by Davek1979 View Post
2002 5.4 That setup lasted 1000 miles if that long. Around the Champaign area only Napa could get the bipass pulley apparatus overnight and it was about $60. Advanced Auto had the grooved pulley and belt in stock ad I was on my way back to work. at a total cost of $52.63
So wait.... you're saying this did not work?
white89gt is online now  
Old 05-24-2018, 10:03 PM
Junior Member
Join Date: May 2018
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default Worked perfect! 8 year old post but worked for me. Thanks for the help.

Originally Posted by JohnnyR View Post
I started a thread the other day asking if anyone knew the belt # needed to bypass a seized AC compressor but didn't have any luck. This morning I did the fix to my 99 4.6 4x4 scab and it was too easy. The belt needed to be shorter and I swapped the idler pulley for one the same size but ribbed since the belt now runs over it instead of under it. The end result works so well that I can't figure why Ford went to the trouble of designing the AC/non-AC setups so differently. Here are the Gates part #'s needed to do the job.

Belt...#K080806 8 rib/81 1/8" long

Idler Pulley...#38052 8 rib/90mm dia.

The parts can be looked up here...
for all the details.

I hope this helps anyone else who encounters this all too common problem in the future. The fix is inexpensive and only takes a minute or two to swap the pulley then just change the belt bypassing the compressor and putting it over the idler instead of under it. Back on the road again

Thanks again...
Steven Hatfield is offline  
Old 07-28-2018, 03:30 PM
Junior Member
Join Date: Jul 2018
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default 2008 f150

I have an 08 F 150 with the 4.6L. the AC compressor is making a terrible racket. I have already tried the serpentine belt for without AC. Following the diagram under the hood the belt was too loose. I switchedbthe side of the idler and tensioner it ran on and it was too short. If anyone has done this and know what belt to ask for I would greatly appreciate it. Thank you.
Eric Howe is offline  
Old 03-11-2019, 01:35 AM
Junior Member
Join Date: Dec 2009
Location: Monetville Ontario Canada
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Cool 2007 expedition 5.4 ac bypass

howdy from Monetville Ontario thanks for your help we were in Georgia traveling to Florida on Sunday bearings went on the ac clutch what do you do google and you fine folks showed up again i was near an auto zone with great folks they let me try belts till i got it right the belt uses its own stretch for tencion as the belt bypasses the clutch the tensioner and one idler pulley works great will fix her up when i get home , with it on there is still about 1/4' clearence between belts coming from crank to alternator from Auto Zone belt number is #6PK2005 and my ford f150 2006 is identical so will work on it as well put belt all around and squeezed it on the top smooth idler
ccawoody1 is offline  

Thread Tools
Search this Thread
Quick Reply: Bypass AC are the part #'s

Contact Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: