3-bearing, 10-tooth bevel drive gear for XB808 front/rear differential. Made of premium HUDY Spring Steel, accuracy machined on a particular gear device and heat treated for optimum strength, durability, minimal use, and extra-long lifespan. 3-bearing pinion gear is a primary fit into the XB808 2010-spec bulkhead, requiring use of the unique #352077 collars and #355690 composite seal.