Singer Upper Looper Domestic 14U544

The Singer Upper Looper is a genuine replacement part designed for Singer domestic overlockers (sergers), specifically the Singer 14U544 model and compatible machines in the 14U/14SH series. The upper looper is a critical stitch‑forming component that carries the upper thread and interlocks it with the lower looper and needle threads to create strong, balanced overlock stitches.