Yamaha Nut - 90179-10006-00. Precision Yamaha OEM Fastener for Reliable Engine Assembly. The Yamaha - Nut - 90179-10006-00 is an authentic OEM part designed to deliver consistent fastening strength in your Yamaha outboard or powersport engine. Manufactured to Yamaha's exacting standards, this nut ensures secure attachment of critical engine components under demanding operational conditions.. Whether you're replacing a lost or corroded nut, or simply maintaining OEM integrity during service, this