Yamaha - Oil Tank Assembly - Oil Injection System - 6E5-21750-05-00

Overview

On oil-injected Yamahas, the oil tank is one of those parts you don’t think about until something feels off—or worse, an alarm goes off. This assembly keeps a steady supply of oil moving to your engine, which is critical for keeping everything lubricated and running clean. Over time, tanks can get brittle, sensors can act up, or connections start to fail. Swapping in a solid, reliable oil tank assembly helps keep your system dependable and your engine protected every time you’re out.

Key Features

• Integrated Oil Storage Design – Holds and delivers a consistent oil supply to the injection system.
• Durable Marine Construction – Built to resist cracking, vibration, and long-term exposure to marine conditions.
• Sensor-Compatible Assembly – Works with Yamaha oil level monitoring systems for accurate alerts.
• Direct Replacement Fit – Designed to match original mounting points and hose connections.

Engine & Boat Compatibility

Compatible with a wide range of Yamaha oil-injected two-stroke outboard engines. Commonly used on mid-range and larger outboards found on fishing boats, skiffs, and offshore rigs equipped with factory oil injection systems.

FAQ

Q: What are signs this oil tank assembly is failing?
A: Inconsistent oil level readings, warning alarms, or visible cracks and leaks are the main signs.

Q: Do I need to bleed the system after installing a new tank?
A: Yes, it’s important to prime or bleed the oil system to make sure proper flow reaches the engine.

Q: Can I reuse my existing sensors or hoses?
A: You can, but it’s best to inspect them closely—worn components can cause issues even with a new tank.

Q: How does heat and sun exposure affect the tank?
A: Over time, it can make the plastic brittle, which is why older tanks are more prone to cracking.

Q: Is this something I can install myself?
A: If you’re comfortable with basic rigging and oil system setup, it’s manageable—just take your time and double-check connections.

• Supersessions
  6E5-21750-04-00, 6E5-21750-03-00