Yamaha BK5-8591A-31-00 - 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 BK5-8591A-31-00 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.
• Sold under Yamaha part number BK5-8591A-31-00.

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Frequently Asked Questions

Is BK5-8591A-31-00 a genuine Yamaha part?

Yes. BK5-8591A-31-00 is the Yamaha part number for the Engine Control Unit Assembly. This control unit processes signals and controls the system it is part of.

Should I diagnose before replacing the Engine Control Unit Assembly (BK5-8591A-31-00)?

Yes. Control unit symptoms can be caused by wiring, sensors, or power supply issues. Confirm the fault with testing before installing part BK5-8591A-31-00.

How can I check that the Engine Control Unit Assembly (BK5-8591A-31-00) is the right part for my vehicle?

Find the Engine Control Unit Assembly in the Yamaha parts diagram for your exact model and year and confirm the part number shown matches BK5-8591A-31-00. A Yamaha dealer can also verify it with your model or VIN.

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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.