Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 168506-01425 found under Indicator Filter Warning Centrif by Engineered Products Co. The National Stock Number assigned to this part is 4330016054396, and the Federal Supply Class is 4330 Centrifugals Separators And Pressure And Vacuum Filters. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 168506-01425.