Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 507275-1083 found under Disk Clutch Vehicular by Kessler Intl Corp. The National Stock Number assigned to this part is 2520016572578, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 507275-1083.