Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 89771-42703-3 found under Gasket 040 Emd 1179 by W L Gore And Associates Inc. The National Stock Number assigned to this part is 1560015279829, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 89771-42703-3.