47-tooth big external spur gear for center differential, precision-machined on a unique gear machine. Can be used with Center Diff Shimming Plates (#354032) and Aluminum Center Diff Mounting Plate 7075 T6 (3mm) (#354055) as a result of bigger diameter (50 mm).
Note:
When using the more recent form of 47T spur gear (with 48 mm diameter) on XB9, the excess components (#354032 and #354055) do not have to be properly used.