Port 1 = Connects to the Air Supply / Compressor Port 2 = Connects to the locker Port 3 = Exhaust port - located in the center of the solenoid.; Port 1 = Connects to the Air Supply/Compressor Port 2 = Connects to the locker Port 3 = Exhaust port-located in the center of the solenoid.
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.