Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 308916-1057 PIECE 140 found under Drive Assembly Righ by Diamond Power International Inc. The National Stock Number assigned to this part is 3020011820639, 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 308916-1057 PIECE 140.