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Used MSD Cap Hold Down Pro Mag #8121

Customer got out of racing and had a massive inventory of new in the box parts that RBS bought out allowing the next buyer a chance to save some cash.

This spark plug wire/magneto cap retainer will make sure your spark plug wires stay on the magneto cap on the magneto as you are blasting down the track breaking records and setting low et's. Simple to install with the two provided thumb screws.

Made from durable plastic fits all standard MSD 12, 20, and mag 44's with the standard magneto cap.

Includes black plastic wire retainer and two thumb screws.