Does a 1994 Jeep Wrangler axle fit 1999 Wrangler?

It depends on the specific axles. While both are Wranglers, Jeep made changes over the years. A 1994 Wrangler's axles might *generally* fit a 1999 Wrangler, but it's not a guaranteed fit. You'd need to verify the following:

* Axle type: Are they both Dana 30 (front) and Dana 35 (rear), or are different axles involved? There were variations within those axle types themselves.

* Wheelbase: The wheelbase is critical. While both are Wranglers, there might be slight differences between the '94 and '99 models that affect axle length.

* Spring perches: The location of the spring perches on the axles must match the frame's mounting points.

* Brake components: Brake caliper and rotor compatibility needs to be checked.

* U-bolts and other hardware: You may need to reuse existing hardware from the '99 or source new components to ensure a proper and safe installation.

Simply put, while *possible*, it's not a direct swap guaranteed to work. You need to compare the specific axle specifications from both years to ensure compatibility before attempting the installation. Using incorrect axles could lead to safety hazards.