ARB 170112 Differential Breather Kit 204040 2 Best for moderate usage FG0889 Best for moderate usage 022 kilograms There are many short comings to this style and the ARB Differential Breather Kit is designed to eliminate these by providing a high flow Description_SHO Diff Breather Kit Description_INV ARB Differential Breather Kit Description_DEF Axle Vent Tube Description_DES Differential Breather Kit Description_EXT ARB Differential Breather Kit Description_EXT Includes Manifold Description_EXT 4 Ports To Connect Up To 4 Breather Lines Description_EXT Air Filter Port Description_EXT Air Filter Assy Description_EXT Push In Fittings Description_EXT Plugs Description_EXT Tubing Description_EXT Screws Description_EXT Cable Ties Description_MKT A differential axle breather serves the important purpose on a 4WD vehicle of venting the air pressure in drivetrain assemblies such as the differential