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Replacing Idler pulleys

15K views 5 replies 4 participants last post by  Kevbz 
#1 ·
Hello,

1997 Jeep Wrangler, 4.0 I6 with out A/C(from the factory) and 5-speed transmission. Manual belt tensioner

The idler pulley where the A/C unit would go has a little bit of play in it and I would like to replace it. There seems to be way to many different pulley's on the market. Does anyone have a specific part number?

The Belt tensioner has ALOT of play and I need to replace it. Would this be the same as the idler pulley? I keep seeing adjustable and non-adjustable pulleys, i would assume the belt tensioner is the adjustable type.

Thanks!
 
#3 ·
I have used two Idler Pulleys, albeit on different TJs; a Crown (Part 4792112) and a Dorman (Part 419-602). Both are fine although I thought the Dorman brand was of slightly better quality. That said, both are made in China and I wouldn't be surprised if they were manufactured in the same factory!

Yes the belt tensioner is adjustable, hence it's name.
 
#4 ·
Thanks for the recommendations! I roughly measured the diameters of the idler pulleys. The one where the AC would go is roughly 3 inches, and the tensioner is roughly 3.5 inches. I guess that would answer my own question of if I can buy two of the same size pulleys.
 
#5 ·
I had the tensioner go bad on my 97, took it off and went to O'Reilys for a replacement. Glad I did as the one they had listed was the wrong size so I just matched it up with one the right size. Ran about $16.
 
#6 ·
I've learned that you call them by adjustable and non adjustable or O'Reilys folks get confused.

if you say Idler pulley and tensioner pulley you get a (o_O) look. And even then like Doc said, don't guarantee you get the right one.
 
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