Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4203-2 found under Armature Motor by Fl Aerospace Corp Janitrol Aero. The National Stock Number assigned to this part is 6105004265430, and the Federal Supply Class is 6105 Motors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4203-2.