Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5166-3545 found under Ballast Lamp by General Manufacturing Llc. The National Stock Number assigned to this part is 6250015590360, and the Federal Supply Class is 6250 Ballasts Lampholders And Starters. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5166-3545.