Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BK4132 found under Gasket by Eaton Corporation. The National Stock Number assigned to this part is 5330000043337, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BK4132.