Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PA12650037 ITEM 1 found under Gear Ring Flywheel by Coltec Industries Inc. The National Stock Number assigned to this part is 3020015522337, 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 PA12650037 ITEM 1.