Alloy USA 451100 Permanent Differential Lock Kit for Jeep Models & RAM Pickup

Differential Lock Kit, Permanent; 84-02 Jeep XJ/YJ/Dodge RAM 1500-3500 The Alloy USA Differential Perma-Lock Kit Is A Permanent Replacement For The Failure Prone OE Vacuum Disconnect System. The Kit Permanently Engages The Central Axle Disconnect (Cad) And Couples Both Front Axles. Once Installed The Axles Will Automatically Engage As Soon As The Transfer Case Is Placed Into Four Wheel Drive Permanently lock front axle into together Replaces vacuum disconnect feature