There is a shift fork that is engaged using vacuum from the motor. The shift fork is located inside the front axle more towards the passenger side. When you engage four wheel drive it lets the vacuum go down to a motor that moves the fork to lock the hubs
The 2008 Jeep Wrangler has 41.3 in. of front head room.
The 2008 Jeep Wrangler has 41.0 in. of front leg room.
The 2012 Jeep Wrangler has 41.3 in. of front head room.
The 2011 Jeep Wrangler has 55.6 in. of front hip room.
The 2011 Jeep Wrangler has 41.3 in. of front head room.
The 2009 Jeep Wrangler has 41.0 in. of front leg room.
The 2008 Jeep Wrangler has 55.6 in. of front hip room.
The 2009 Jeep Wrangler has 41.3 in. of front head room.
The 2008 Jeep Wrangler has 55.8 in. of front shoulder room.
The 2006 Jeep Wrangler has 40.0 in. of front leg room.
The 2013 Jeep Wrangler has 55.6 in. of front hip room.
The 2014 Jeep Wrangler has 41.0 in. of front leg room.