Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number YB-06139 found under Housing Flywheel by Yamaha Nippon Gakki Co Ltd. The National Stock Number assigned to this part is 2805015809562, and the Federal Supply Class is 2805 Gasoline Reciprocating Engines Except Aircraft And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like YB-06139.