Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 478-1984-801 found under Parts Kit Bearing Replacement Me by Parker Hannifin Ltd. The National Stock Number assigned to this part is 3120012893200, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 478-1984-801.