2007 Jeep Wrangler JK Build-Up

Here are some pictures of the new gears (next to older style D30 and D44 gears):

Here is the truth on JK gears:

• The Dana 44 gears use either 7/16 or 1/2 bolts depending on when your Jeep was made.
• The Dana 44 ring gears will work on 3.73 & numerically lower carriers/lockers.
• The Dana 44 uses totally different pinion shims, bearings, cups, crush sleeve and seal than any other.
• The Dana 44 uses the same carrier bearings and cups as older ones.
• You can install aftermarket lockers in the Dana 44 if you drill out the ring gear holes in the locker to the correct size!
• The Dana 30 uses 7/16 ring gear bolts.
• The Dana 30 ring gears will work with normal carrier/lockers depending on your ratio.
• The Dana 30 uses totally different pinion shims, bearings, cup, crush sleeve and seal than any other.
• The Dana 30 uses the same carrier bearings and cups as older ones.
• You can install aftermarket lockers in the Dana 30!

When installing new gears or a locker you will need:

• New crush sleeves (dealer only item, so far)
• Pinion shims (dealer only iem, so far)
• Pinion seal (may be able to reuse, dealer only item)
• Ring gear bolts
• Carrier shims. These are the same exterior shim style that the 03-06 Rubicon 44s used, but ours were thinner than most of the older Rubicon’s.