Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PK41 found under Repair Kit Compressor by Siemens Energy And Automation Inc. The National Stock Number assigned to this part is 4310007410197, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PK41.