The vertical bulge in the front and rear axle cases allows the crown wheel to rotate inside. The crown wheel is a large gear that transfers the input drive into the differential and along the axle shafts. The bulge is pressed steel and when rammed into immovable objects such as rocks can easily be holed loosing valuable lubricating oil.
Terrafirma differential guards are easy to fit and offer protection against even the most aggressive attacks on obstacles.
Terrafirma zinc plated steel Diff Guard , this guard clamps to the diff casing on the following models -
pre 2007 Defender front ( all models),
pre 2007 Defender 90 Rear (except those fitted with Wolf Axles) ,
Front & Rear on both Discovery 1's and Range Rover Classic's RRC
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Terrafirma Range Rover P38 Differential Guard Front
Protecting both the front differential pan and the rear steering bar this guard will take the worry out of off roading a Range Rover P38. The guard bolts to the Axle using radius arm mounting points, so you know it will be secure while it acts as ...