Yamaha Crankshaft & Oil Pump Set - 69J-11411-00-00. OEM Yamaha Crankshaft & Oil Pump Assembly for Reliable Engine Lubrication. The Yamaha Crankshaft & Oil Pump Set - 69J-11411-00-00 is a genuine OEM replacement designed to ensure proper oil circulation and power transmission in your Yamaha outboard. By maintaining consistent lubrication, this assembly prevents friction, overheating, and premature engine wear. Built to Yamaha's factory standards, it guarantees seamless fitment and long-term durab