No problem using either. The original part [31600-KY2-703] has been superceded by 31600-MV4-010.

They're crazy expensive, but I'd strongly advise always using a genuine Honda/Shindengen part. Ensure there's no corrosion in the connector block on the wiring harnes, and that the regulator is in good contact with the mount for the best heat dissipation.
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Andy.
NSR-WORLD.COM

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