Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 81003-37801 found under Wiring Harness by Koito Mfg Co Ltd. The National Stock Number assigned to this part is 5995016527340, and the Federal Supply Class is 5995 Cable Cord And Wire Assemblies Communication Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 81003-37801.