The Yukon Zip Locker is the latest in on-demand traction. Its air-operated design allows you to switch from an open differential to 100% lockup when you need it, giving you the ultimate in driver selectability.Fits Jeep JK Non-RubiconForged case and 8620 internals for added strengthWorks with a variety of air delivery systemsAssembled in the USANotes:** This unit fits NON-Rubicon JK rear housings only. It will NOT work with JK Rubicon differentials. This unit is drilled for 1/2″ ring gear bolts. Includes new carrier bearingsFits:Jeep Wrangler JK 2 Door (2007-2018)Jeep Wrangler JK 4 Door Unlimited (2007-2018)