Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 50148-123 found under Refrigeration Unit by Aar Manufacturing Inc. The National Stock Number assigned to this part is 4110015003618, and the Federal Supply Class is 4110 Refrigeration Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 50148-123.