Yamaha BG4-8591A-00-00 - Engine Control Unit Assembly is a genuine Yamaha part. This control unit processes signals and controls the system it is part of. Confirm part number BG4-8591A-00-00 against your Yamaha parts diagram before ordering.

---

Key Features & Benefits

• Connects to the factory wiring harness for its location.
• Processes sensor inputs and controls the system it manages.
• Replaces a failed or damaged control unit.
• Sold under Yamaha part number BG4-8591A-00-00.

---

Frequently Asked Questions

What is Yamaha part BG4-8591A-00-00?

BG4-8591A-00-00 is the Yamaha part number for the Engine Control Unit Assembly, a genuine Yamaha part. It replaces a failed electronic control unit with the specified Yamaha part.

Should I diagnose before replacing the Engine Control Unit Assembly (BG4-8591A-00-00)?

Yes. Control unit symptoms can be caused by wiring, sensors, or power supply issues. Confirm the fault with testing before installing part BG4-8591A-00-00.

Which Yamaha models use the Engine Control Unit Assembly (BG4-8591A-00-00)?

Model and year fitment data is not listed for BG4-8591A-00-00 on this page. Look up your model's Yamaha parts diagram and confirm that it lists part BG4-8591A-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.