Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R74D02 found under Filter Drier Refrigerant by Kerotest Manufacturing Corp. The National Stock Number assigned to this part is 4130000815399, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R74D02.