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  #1  
Old 01-08-2012, 07:16 PM
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Need Driver side Idler Pully

I noticed I have a bad idler pulley, its the one on the drivers side. I cannot find a part number for it. The parts store can only find the number for the one on the passenger side that is smooth. Does anyone have any info on the grooved drivers side idler pulley?
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Old 01-09-2012, 06:36 PM
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Any help on this? I went by another parts store today and the pulley they gave me is smaller in diameter than the one that is on it. Does any one have a pulley diagram with part numbers?
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Old 01-09-2012, 06:45 PM
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2005 FORD F-350 SUPER DUTY Idler Pulley

Way down at the bottom of the page has the motorcraft one's listed. There are a couple of ribbed ones listed.
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Old 01-09-2012, 06:50 PM
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There are two part numbers listed for idler pulleys on these engines, so I will assume one of them is the one you seek. They are as follows:

7C3Z-8678-B (YS-336)

3C3Z-8678-EB (YS-314)

Hope this helps.

EDIT: It looks like the first of the two is the one you seek.

Last edited by m-chan68; 01-09-2012 at 06:53 PM.
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Old 01-09-2012, 07:05 PM
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Ok, so from that I am thinking that the two grooved pulleys must be the same number. I cant find three part numbers. When I pulled up a pic of the first number it is a smooth pulley and the second is the grooved one. I am looking for a grooved one. I have one here that is a Gates and holding up to the one that is still on the truck it looks smaller.
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Old 01-09-2012, 07:11 PM
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Quote:
Originally Posted by smuesse View Post
I am looking for a grooved one.
My bad. It looks like 3C3Z-8678-EB (YS-314) is the one you want.
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Old 01-09-2012, 07:14 PM
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Cool. Thank you for the help. I'm able to pull up a pic on the OReilly site and it looks like the same one.
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Old 01-10-2012, 02:09 PM
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Thanks for the part number. I went by ford and picked up a new one.
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Old 01-10-2012, 02:35 PM
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not sure about yours but, i have just knocked out the bearings and matched the old up with a new $8 dollar bearing on my 96 7.3. Beats paying $26 for a new pulley. Just like the old days, sometimes i guess we forget the obvious.
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Old 01-10-2012, 02:37 PM
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I tried that but couldn't find one at the time. I usually do that.
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