Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y2972553-1 found under Guard Oil Pinion by David Brown Gear Systems Limited. The National Stock Number assigned to this part is 3020004205289, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like Y2972553-1.