Yamaha 8 mm Fuel Connector | Sierra 18-80415 Sierra 18-80415 Fuel Connector Yamaha 8 mm Fuel Connector Designed for use with Yamaha 8 mm fuel tubing Can also be used with Sierra 5/16 in. Silverado 4000 hose Mates with Sierra 18-8077-1 Replaces Yamaha 6E5-24305-05-00, 6Y2-24305-05-00