Genuine Bernina Top Pre-Tension Unit – Bobbin Winding Tension

Genuine Bernina top pre-tension unit, fitted to the upper thread path and used to provide tension when winding a bobbin.

Compatible with the following Bernina models:

Activa: 125, 135, 145, 210, 220, 230, 240
B215,
3 Series B325, B330, B335, B350PE, B380
Artista: 170, 180, 630, 640, 730 (730E)
Aurora: 430, 435, 440QE, 450
5 Series: B530, B550 Quilters Edition, B555, B560, B570 Quilters Edition, B580
8 Series: B820 Quilters Edition, B830, B880 Plus
Longarm: Q20, Q24

Part Number: 0048497200

Genuine Bernina replacement part.