Originally Posted by Rangerplus
Ok, I'm looking for an axle to use for my 94 Ranger 5.0 build. I came accross a truck locally being parted out, an 02 FX4. The axle code is...
Can somebody help direct me to where I can find what this info means? I believe it is an 8.8. I'm guessing from a little reading that this is likely an 8.8 with 31 spline axles. Anybody know what gear ratio it is? Thanks for any help!!!
2002 FX4's were 4.10, 8.8", 31-spline with Torsen limited slip.
Be very careful of any 2002 Torsen-equipped Ranger axle because there was a safety recall due to the Torsen diffs fragging. Replaced axles have a special tag on them, purple IIRC. Those warrantied axles should be OK and Torsens in FX4s assembled after January 28, 2002 should be OK as well.
Here's the problem: Since the early failures were reported on manual FX4s, Ford warrantied the axle assemblies on the manual trucks ONLY, choosing to NOT recall the same Torsen diffs in the early 2002 automatic FX4s. Predictably, IMO, the suspect diffs in the automatic trucks have also been known to fail over time. Obviously, any of these early Torsen diffs are to be avoided, especially for a V8 swap.
ALL FX4s, manual or automatic, assembled after January 2002 came with the good updated diffs. If you have access to the axle donor, you can look at the build date on the door jamb. If you know the VIN of a manual donor, a Ford dealer can tell you if the axle was ever replaced under the recall.
Safety recall #02S32