Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 221 02 090 found under Clutch Assembly Iri by Recon Opticalinc. The National Stock Number assigned to this part is 3010007894186, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 221 02 090.