Yamaha BYS-H591A-00-00 - Engine Control Unit Assembly is a genuine Yamaha part. This control unit processes signals and controls the system it is part of. Use part number BYS-H591A-00-00 to confirm it matches the component shown in your model's Yamaha parts diagram.

---

Key Features & Benefits

• Processes sensor inputs and controls the system it manages.
• Replaces a failed or damaged control unit.
• Connects to the factory wiring harness for its location.
• Sold under Yamaha part number BYS-H591A-00-00.

---

Frequently Asked Questions

What is the Yamaha Engine Control Unit Assembly (BYS-H591A-00-00)?

The Engine Control Unit Assembly is a genuine Yamaha part sold under part number BYS-H591A-00-00. It replaces a failed electronic control unit with the specified Yamaha part.

What does the Engine Control Unit Assembly (BYS-H591A-00-00) control?

The Engine Control Unit Assembly manages the system it is wired into, using inputs from related sensors, as shown for part BYS-H591A-00-00 in the Yamaha parts diagram.

Which Yamaha models use the Engine Control Unit Assembly (BYS-H591A-00-00)?

Model and year fitment data is not listed for BYS-H591A-00-00 on this page. Look up your model's Yamaha parts diagram and confirm that it lists part BYS-H591A-00-00 before ordering.

---

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.