Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B379820PM1 found under Housing Bearing Unit by Rollsroyce Airlines. The National Stock Number assigned to this part is 3130004686489, and the Federal Supply Class is 3130 Bearings Mounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B379820PM1.