Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3Z1 188 ITEM 20 found under Gasket by Man Diesel And Turbo Ltd. The National Stock Number assigned to this part is 5330013998332, 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 3Z1 188 ITEM 20.