Jumbo Metal Bobbin For Janome MB-4, MB7, HD9 Version 1, Elna EL940S, Melco Multi Needle Machines

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This is the original Janome Jumbo Metal Bobbin for MB4S, MB-7 & EL940S Part # 003770591001. We recommend that you only use genuine Janome replacement bobbins. These are sold as a singular quantity.

Fits Janome models:

  • MB4
  • MB4N
  • MB4S
  • MB7
  • HD9 Version 1

Fits Elna models:

  • 9900
  • 940
  • 970

Fits Melco models:

  • EP4
Janome Jumbo Metal Bobbin For MB4S & EL940S

This is the original Janome Jumbo Metal Bobbin for MB4S & EL940S Part # 003770591001. We recommend that you only use genuine Janome replacement bobbins. These are sold as a singular quantity.


Sewing Supply

Questions? - Call Toll Free 800-229-8889



If for some reason your purchase does not fulfill your needs you can return it within 30 days from receipt of the product (according to UPS or Fed-Ex delivery records). Simply call for a Return Merchandise Authorization (RMA) number (Note: No RMA will be issued without original packing.), and we will give you proper instruction on returning your purchase. We cannot accept returns without a Return Merchandise Authorization number, so be sure to call us first. Shipping is non-refundable, and items purchased originally with Free Shipping will have actual original shipping fees deducted from the refund.  Extended Warranties are also non-refundable, and items with free Extended Warranties will be refunded less the retail price of the Extended Warranty that was provided. Providing your purchase is repacked according to factory standards and without excess wear there is no restocking fee.

*The 30-Day Return Policy applies to all items we sell except the following non-returnable products.
  • Any item without original packing 
  • Quilter's Cruise Control products 
  • Grace frames, hoops and frame related products including Sure Stitch & Speed Controls 
  • Software, computer hardware, & embroidery design cards unless unopened. Opened but not installed are still Not returnable 
  • Sewing cabinets, cutting tables, sewing chairs, cabinet inserts, and quilting table extensions 
  • Industrial sewing machines, industrial sergers, industrial irons, industrial cutting equipment, industrial tables, industrial stands, & industrial motors 
  • Extended warranties 
  • Any special-order items

Note: Unless otherwise noted, sewing machines and vacuums are not intended for commercial use. Any commercial use of a home sewing machine or vacuum constitutes abuse of the product and will void all warranties, including the 30-Day Return Policy.


We accept PayPal, Mastercard, Visa, Discover & American Express. To pay by PayPal please use the link in the item listing after it has ended. To pay by credit card over the phone call toll free 800-229-8889. Our office hours are Monday through Friday 8:30-5:30 & Saturday 9-1 Central Time. 


2 Reviews

  • 5
    Jumbo Bobbin

    Posted by Annette Foreman on 14th Oct 2021

    These were perfect for my machine and shipping was quick

  • 5

    Posted by Patti on 5th Mar 2021

    Fast delivery and a great product I could not find locally Was very pleased.