47-tooth big external spur gear for center differential, precision-machined on a special gear device. Is employed with Center Diff Shimming Plates (#354032) and Aluminum Center Diff Mounting Plate 7075 T6 (3mm) (#354055) because of larger diameter (50 mm).
Note:
When using the more recent form of 47T spur gear (with 48 mm diameter) on XB9, the additional parts (#354032 and #354055) don't need to be used.