ARB 0750002 Red Differential Cover for DANA 30 For Use on JEEP JK Front, JEEP JK Rear, 1500 Dodge Ram Front, FJ40s, On Dana 25/27/30 Front Or Rear Axles, Super Thick Cast Nodular Iron Bright Red Powder Coat Finish Magnetic Drain Plug Magnetic Dip Stick Gasket Not Included Key Features Computer optimized cross brace design increases the structural rigidity of the whole axle Additional housing strength helps keep the ring & pinion gears meshing on the flat faces of the teeth, greatly increasing ring & pinion life and overall maximum load strength Top quality, high power neodymium magnets are used in both the drain plug and the dipstick to collect metallic wear particles as the vehicle moves Magnet location in the end of the dipstick allows the oil to be checked for tell-tale signs of internal damage Prolonged carrier bearing life due to extra support to the bearing alignment Approach/departure angle optimized by angled exterior surfaces Unique dipstick/filler cap design allows differential oil level to be adjusted for customized high driveline angl es