Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SIG8003-1 found under Gearcase Motor by Magnetic Peripherals Inc. The National Stock Number assigned to this part is 3010001320546, 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 SIG8003-1.