Yamaha - Water Jacket Tap Kit - Cooling System Monitoring Component - N/A

Overview

If you’ve ever wanted a better read on how your motor is cooling under load, this setup makes a big difference. A water jacket tap lets you pull pressure straight from the engine, not just rely on a telltale stream. I’ve installed these on a lot of rigs, especially for guys running long or hard, and it gives real peace of mind. It’s a simple add-on that helps you catch cooling issues before they turn into bigger problems.

Key Features

• Direct Cooling System Access – Allows water pressure to be measured directly from the engine block.
• Complete Installation Kit – Includes tap, hose, and mounting hardware for straightforward setup.
• Gauge Integration Ready – Designed to connect easily to a water pressure gauge system.
• Genuine Yamaha Components Included – Comes with correct ferrule, nut, and gasket for proper sealing.
• Improved Cooling Monitoring – Helps detect flow issues early to prevent overheating damage.

Engine & Boat Compatibility

Compatible with most Yamaha outboards supporting water jacket tap installation. Verify fitment based on your specific engine model.

FAQ

Q: Why install a water jacket tap?
A: It lets you monitor actual water pressure inside the engine, not just external flow.

Q: Does this replace the telltale indicator?
A: No, it works alongside it to give more accurate information.

Q: Is installation complicated?
A: It’s straightforward, but you’ll need to properly route the hose to your gauge.

Q: Do I need additional parts for the gauge side?
A: This kit includes the necessary ferrule, nut, and gasket for proper connection.

Q: Is this useful for saltwater use?
A: Yes, especially since salt buildup can affect cooling and this helps you monitor it.

• Supersessions
  688-83667-01-00, 688-83667-01-00