Yamaha B5K-8591A-00-00 - Engine Control Unit Assembly is a genuine Yamaha part. It is an electronic control unit that manages system functions using input from sensors. Confirm part number B5K-8591A-00-00 against your Yamaha parts diagram before ordering.

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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.

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Frequently Asked Questions

What is Yamaha part B5K-8591A-00-00?

B5K-8591A-00-00 is the Yamaha part number for the Engine Control Unit Assembly, a genuine Yamaha part. This control unit processes signals and controls the system it is part of.

Should I diagnose before replacing the Engine Control Unit Assembly (B5K-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 B5K-8591A-00-00.

Which Yamaha models use the Engine Control Unit Assembly (B5K-8591A-00-00)?

Model and year fitment data is not listed for B5K-8591A-00-00 on this page. Look up your model's Yamaha parts diagram and confirm that it lists part B5K-8591A-00-00 before ordering.

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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.