Yamaha - Throttle Body Assembly - Fuel & Air Intake Control - 66K-13751-00-00

Overview

When throttle response starts feeling off or the engine isn’t idling as smooth as it should, the throttle body is usually part of the problem. This Yamaha throttle body controls how air enters the engine, which directly affects how it runs and responds. It’s one of those components that, when working right, you don’t notice—but when it’s not, you definitely do. Replacing it helps bring back steady idle and smooth acceleration.

Key Features

• Airflow Control Precision – Regulates incoming air to maintain proper engine balance.

• Improved Throttle Response – Helps restore smooth and consistent acceleration.

• OEM Yamaha Fitment – Built to factory specifications for proper function and installation.

• Fuel System Support – Works with the engine system to maintain stable performance.

Engine & Boat Compatibility

• Compatible with select Yamaha outboards (confirm fitment by model and year)

FAQ

Q: What are signs of a bad throttle body?
A: Rough idle, hesitation, or delayed throttle response are common signs.

Q: Can this part be cleaned instead of replaced?
A: Cleaning can help, but if there’s wear or sticking, replacement is the better option.

Q: Will this improve engine performance?
A: Yes, especially if the old unit was restricting airflow or not operating smoothly.

Q: Is installation difficult?
A: It depends on access, but proper alignment and connections are important.