The Looper Holder for Coverstitch (Part 30104012) is a genuine JACK original replacement part designed for JACK W4D and JK-K5 coverstitch series coverstitch machines. Manufactured to OEM specifications for precise fit and reliable performance.
Equivalent Part Numbers
JACK: 30104012
Compatible Machines
This part fits the following industrial sewing machine models:
JACK: W4D, JK-K5 coverstitch
Technical Specifications
Brand
JACK
Part Number
30104012
Part Type
Loopers
Condition
New – OEM Original
Looking for a replacement looper holder for your JACK W4D or JK-K5 coverstitch coverstitch machine? This genuine OEM part ensures reliable performance and precise fit. Shop with confidence — all parts ship from Miami, FL.
⚠️ Compatibility Notice: Always verify your machine model and subclass number before ordering. Part numbers and compatibility are provided as a reference only. Supra Sewing is not responsible for purchases made without confirming compatibility with your specific machine. All sales on replacement parts are final.
