Yamaha 6EY-8591A-21-00 - Engine Control Unit Assembly | WaveRunner VX-C, WaveRunner VX

The genuine Yamaha 6EY-8591A-21-00 Engine Control Unit Assembly is an OEM replacement component for compatible Yamaha WaveRunner and other listed Yamaha applications. This part is used within the electrical control system and supports electrical signaling, power management, ignition control, or communication within the compatible Yamaha system. Using the correct Yamaha OEM part helps maintain factory fit, compatibility, and dependable operation. Confirm your exact model and year in the compatibility table below before ordering.

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Key Features & Benefits

• Genuine Yamaha OEM Part: Factory part number 6EY-8591A-21-00 manufactured for compatible Yamaha applications.
• Factory Fit & Compatibility: Designed around Yamaha specifications, dimensions, and the surrounding factory assembly.
• Electrical Control Support: Supports electrical signaling, power management, ignition control, or communication within the compatible Yamaha system.
• Service-Ready Replacement: Suitable for routine maintenance, restoration, or repair when this part number is specified for the model.

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Fits These Yamaha Models

Yamaha Model	Compatible Years
VX1050 WaveRunner VX-C	2020
VX1050C WaveRunner VX	2019

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Frequently Asked Questions

What is Yamaha part 6EY-8591A-21-00?

6EY-8591A-21-00 is the genuine Yamaha Engine Control Unit Assembly, an OEM replacement component used on the compatible Yamaha models listed above.

What is Yamaha 6EY-8591A-21-00 used for?

It is used within the electrical control system and supports electrical signaling, power management, ignition control, or communication within the compatible Yamaha system.

Which Yamaha models fit 6EY-8591A-21-00?

This part fits the Yamaha models and years shown in the compatibility table above, including WaveRunner VX-C and WaveRunner VX. Fitment can vary by year and configuration, so verify your exact model and model year 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.