Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL-2043B-001 ITEM 16 found under Breather by Cs Controls Incorporated. The National Stock Number assigned to this part is 3040013648769, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PL-2043B-001 ITEM 16.