Rear end size differences???

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Maxtrac Suspension

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Hey guys, I have a question for the 3rd gen owners and I'm hoping somebody will know this... Did the 2002-2008 Ram 1500 2wd trucks (non mega cab) come with different size rear axle housings? Meaning, was there more than one size axle housing that came on these trucks at any given time? I was under the impression that they all came with a 3 1/4" (give or take a few mm) rear axle tube but the other day I had a customer tell me he had a 3.5" (or maybe even slightly larger) rear axle housing on his truck. I thought these trucks only came with one size and if it is one size, does anybody know exactly what that size is? Or, if there are various rear axle sizes, does anybody know what years, submodel, package, etc. determined this? I only need to know this so that we can provide the correct U-bolts in our kits for the 3rd gen models. We have been providing U-bolts with a 3.31" ID and have never had any fitment issues with that size up until just the other day when a scenario came up on a 2004. The gentleman said the housing was about a 1/4" or more larger and our U-bolts wouldn't work. This left me scratching my head:confused: so I came here to get some answers from the Ram gurus! Please let me know if you guys have any info on the 1500 2wd 3rd gen axle sizes! Thank you, I truly appreciate it -- Sean
 

xtremewlr

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I can get you a measurement from my axle tomorrow. I have a 2004 QC 2WD so it should be the same as what your customer has.
 

xtremewlr

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I did find that the 9.25" Chrysler rear axle was used on all Ram 1500s in the rear from 1994 to 2010 and they "should" all be the same dimension wise.
 

xtremewlr

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Everything I am finding searching the vast interwebs is saying the 9.25 has 3.5" axle tubes. Pics show that it does appear to taper down to around 3 1/4" at the ends near the brakes but the perch areas are all 3.5". I'll still get you a measurement on mine as soon as I can.
 

xtremewlr

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Measured mine this morning before taking the truck to the suspension shop.

3.5". I measured both the axle tube itself and the spread between the u-bolts.
 
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Maxtrac Suspension

Maxtrac Suspension

Senior Member
Joined
Oct 7, 2013
Posts
377
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Location
Anaheim, CA
Ram Year
2013
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4.7L V8
Measured mine this morning before taking the truck to the suspension shop.

3.5". I measured both the axle tube itself and the spread between the u-bolts.

Thanks man I really appreciate you doing that:happy107: But now I am somewhat confused lol:think:. Huh, that is really interesting. Thank you so much! Now I need to do some research! Have a great weekend! -- Sean
 

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