Joined: Wed Nov 15th, 2017
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Most articles and forums agree that if the ranger had a 4 cyl or a non 4.0 V6 it had a 7.5" rear gear. The 4.0 has the 8.8" gear but it is a 28 spline axle, not a 31 like the Explorer/Mountaineer. If anyone has found different please tell me, but remember the rear end might have been switched out in your ranger so be sure please.
I have a 2011 with 3.73s, my axle code is 96. Upon adding earlier rear blocks to mine to add some lift I had to order different U-bolts than I got with the blocks. I realized I have the thicker axle tubes (3.25" IIRC), which means 31 spline right? Unless Ford decided to use the thicker tubes with the same 28-spline axles.
I also changed out the axle bearings and seals in the rear when I bought it. I didn't think to count the splines at the time. The seals I ordered online were too small, but supposedly for an 8.8" still. I ended up going to the local auto parts store and getting the correct seals.
Overall, the 28-splines were a bit thinner than the 31-splines right? I have the FoMoCo part number for the axle bearings if someone has a way to cross reference that. Its E3TZ-1225-AA.
The OD of the bearing is the exact same as the bearings I replaced in my 8.8" 2008 Mustang GT (I used the old Mustang bearing to aid me in installing the new Ranger bearing). Again, not sure what spline that is either.
edit: I'm interested in going with some 4.10's eventually. It would be nice to find an LS rear end but I think I'll just end up getting re-geared. If I happen to find a decent 31 spline rear end, I should be able to assume the front diff will swap over to mine as well, right? Are there different size/spline front drive axles (CV joints) or were they all the same?
Also, guys looking for LS or a locking diff can likely fit one from a Mustang. The V6 (4.0) from '05-09 had the 7.5" rear end and the GTs (4.6L) had the 8.8". The axle housings will obviously be different but the internals should be identical, given the correct splines.
Last edited on Fri Dec 8th, 2017 10:44 pm by RiggerWings
2011 Ranger Sport 4x4, daily
2008 Mustang GT, garage queen
2013 Mazda CX5, grocery getter
2018 Harley Davidson Road Glide Special, the toy