Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5519-189 LINE 1 found under Blower Air Barrier by Bvt Surface Fleet Support Ltd. The National Stock Number assigned to this part is 4140015606087, and the Federal Supply Class is 4140 Fans Air Circulators And Blower Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5519-189 LINE 1.