Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8901-7891-18 found under Plug In Unit Electrical Electron by E And R Electronics Inc. The National Stock Number assigned to this part is 6625001067500, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 8901-7891-18.