Serpentine belt length - Jeep Wrangler Forum

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Old 04-04-2014, 12:48 PM   #1
Join Date: Apr 2014
Posts: 5
Serpentine belt length

What is the right belt for a 1999 Wrangler 4.0L, A/C & PS?

I went to the store and received one that is 79.66 in length, which was too short. The exchange belt is a 6PK2345 is 92.3 in length. I have read threads of owners using belts that are 94 in length...The auto parts has either 93.8" or 94.2....

What is the right belt length?

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Old 04-04-2014, 01:01 PM   #2
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Join Date: Nov 2012
Location: Portland, Oregon
Posts: 1,979
I used a gates belt when I replaced my '99 4.0 w/air.,ca...,parttype,8900

I don't think 1/4-1/2" is going to matter one bit, in fact I think you can adjust out larger differences than that quite easily with the adjustable tensioner on the '99. I'd recommend either a Gates or a Gatorback myself. I've always used Gates belts, never once had an issue. I'd also suggest replacing the idler pulleys while you're there.
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