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1/2" X 5/8" Shaft Adapter/Key for Regal Rexnord - Marathon Part# A105

Existing reviews

Compatibility Feedback

Wasnt completely sure this would match at first since the older unit needed replacement part. Thankfully took around thirty minutes from start to finish and everything is working again.

From: Guest | Date: 9/6/2025 9:36 AM

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Installation Experience

Picked this up because the appliance suddenly stopped working properly. Mounting holes lined up correctly during install. Noise issue disappeared after replacement.

From: Guest | Date: 12/19/2025 8:36 AM

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