Yamaha - Oil Pump Cover Engine Lubrication Component 6DA-15412-00-00. Overview. The Yamaha Oil Pump Cover 6DA-15412-00-00 is designed to protect and seal the oil pump assembly, ensuring proper lubrication throughout your engine. Even though it's a simple component, it plays a critical role in keeping oil contained and maintaining system pressure. If this cover becomes damaged, warped, or improperly sealed, it can lead to leaks or reduced lubrication efficiency-both of which can impact engine performance. Replacing it helps keep your lubrication system working as it should.. Key Features. • Protective Oil Pump Housing Cover - Shields the oil pump and keeps internal components secure.. • OEM Fit Precision - Built to Yamaha specifications for proper sealing and alignment.. • Leak Prevention - Helps maintain oil pressure and prevents oil loss.. • Durable Construction - Designed to withstand heat, pressure, and marine operating conditions.. Engine & Boat Compatibility. Verify compatibility