Viking Husqvarna repair/ replacement parts.  Geared shuttle driver #4116415-01 for Viking 6460 machine.  Plastic hook holder with metal gearing and plastic gear cover. Shuttle driver will work on other models including:  5610, 5710, 6020, 6030, 6440, 6460, 6640, 6690,but may need different gear cover.   Price includes shipping to lower 48.  Return for refund if fails on your machine.  Why pay $$$$ new, if you can find it, when you can get used for less?.  This is the only part that failed on my first Viking machine given.  The part cost $94 to replace and another $$$ for mechanic to install.  The owner bought a new one instead of searching for days and never finding one.