Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R5138554 found under Blower Assembly by Stewart And Stevenson Power Products. The National Stock Number assigned to this part is 2815003534895, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R5138554.