Yamaha - Oil Pump Assembly Engine Lubrication System 6CJ-13300-00-00. Overview. On Yamaha outboards, proper lubrication is everything if you want the engine to last. The oil pump is what keeps that flow steady, especially when you're running hard or for long periods. I've seen engines start to run rough or wear faster when oil delivery isn't consistent. When this pump is doing its job, the motor runs smooth, quiet, and stays protected where it matters most.. Key Features. • Consistent Oil Flow Delivery - Maintains steady lubrication to reduce engine wear and friction.• Precision Pump Operation - Regulates oil movement based on engine demand for reliable performance.• Durable Internal Components - Built to handle continuous operation and resist long-term wear.• Engine Protection Support - Helps prevent internal damage by ensuring proper lubrication at all times.• Factory-Spec Fitment - Designed to match Yamaha engine systems for proper installation and function.. Engine & Boat Compatibi