Yamaha - Water Inlet Cover 2 Cooling System Component 6AW-45215-00-00. Overview. Water flow is everything when it comes to keeping an outboard cool, and this cover plays a bigger role than most people think. It helps direct water where it needs to go, keeping the cooling system working the way Yamaha designed it. When these covers get damaged or worn, you can start running into overheating issues that don't have an obvious cause. It's one of those parts that quietly does its job every time you're on the water.. Key Features. Controlled Water Flow Path - Helps guide incoming water through the cooling system properly.. OEM Fit and Seal - Matches Yamaha specifications for proper alignment and secure installation.. Durable Marine Construction - Built to handle constant water exposure and harsh conditions.. Cooling System Support - Plays a key role in maintaining consistent engine temperature.. Engine & Boat Compatibility. Designed for Yamaha outboard engines utilizing this style of water i