Cod. 5063
limited stock

Front differential lock Jeep CJ

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This front differential lock is meant to be installed on the Jeep CJ Dana 30

From the drop-down menu you can choose the spline differential and the final ratio to the axle.

The DANA 30 axle that originally equip the Jeep Cj, use 27 spline, it's possible to make the BIGSPLINE modification and install a 30 spline differential to increase reliability, in case you want to install a differential that allows the BIGSPLINE modification you must also buy the reinforced axle shafts with the larger spline that you find here.

The kit includes the differential lock, the solenoid valve, the air fittings and buttons for the electric actuation of the block.

The great advantage of this system is represented by the fact that the vehicle circulates with the free differential in road traffic, thus avoiding premature wear of the wheels or the risk of a sudden engagement of the block.

Off-road, when the situation requires it, the lock can be activated, 100% effective, in a tenth of a second simply by pressing a button, activation and deactivation with the vehicle stopped.

This ARB block is to be purchased in combination with a compressor capable of operating the block.

Contact us for any doubts about the model of the diff lock to be purchased.


How the ARB Air Locker works: the compressor (not included) releases the pressure necessary to lock the differential and is usually installed in a suitable position inside the engine compartment.

The compressor is switched on automatically and is used to keep the pressure necessary to engage the differential lock constant.

The switches, which can be fixed on the dashboard, allow the locking to be activated and deactivated.

The insertion can also take place with the vehicle running thanks to the type of annular piston applied to the differential but a reduced speed is recommended.

When the device is deactivated, the compressed air comes out of the solenoid valve and small springs open the safety ring, thus freeing the differential.

The assembly does not present major difficulties as it works on the original axles by replacing only the differential housing
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