Bernina L450 Parts & Accessories
Replacement parts and accessories confirmed for the Bernina L450 serger. We hold 4 items whose specification names the L450: extension tables, inserts & frames, knives & loopers. Third-party parts made to fit this model are labeled compatible, never as the brand's own; Sew Steady tables and inserts are cut to this model's bed. Nothing on this page is assumed from a sibling model — if a part is here, the L450 is named on it.
Other parts
4 parts-
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Compatible -
Compatible
Most-replaced parts on the Bernina L450
Knife Bernina L450 L460 Lower (5020700406, $48.10): the upper knife does the cutting and dulls first — a ragged or chewed edge, fabric pushing instead of slicing, or threads fraying before the loopers catch them means it is due.
SEW STEADY TABLE Bernina L450 Serger 18x24 (DW-BS112, $149): an extension table is cut to this machine's bed and free-arm position; sibling models are not automatically the same.
Finding your model number
The model number is on the machine itself, not on the carry case or the manual — look for a plate or sticker on the front of the base, the right-hand side, the back near the power socket, or underneath. On a Bernina it is printed as L450 and the letters and suffix are part of it; a sibling model with a different suffix can take different parts.
Common problems and the part that fixes them
| Symptom | Likely part on this page | Help page |
|---|---|---|
| Edge is ragged or fabric chews instead of cutting (sergers) | Knife Bernina L450 L460 Lower (5020700406), Knife Bernina L450 L460 Upper (5020700407) | /help/serger-not-cutting-cleanly/ |
Related machines
- Bernina L460 — shares 2 parts with this model → (no hub — fewer than 3 parts; link the part pages instead)
Frequently asked questions
Which parts do you stock for the Bernina L450?
4 items whose specification names the L450: 2 extension tables, inserts & frames; 2 knives & loopers. Each one is listed above with its price and whether it is the manufacturer's part, a compatible part, or an accessory cut for this model.
Are the compatible parts for the L450 as good as the original?
A compatible part is made by a third-party manufacturer to the dimensions of the Bernina part and costs less. For bobbin cases, plates, knives and feet that is usually a sensible buy; for a hook or anything with moving parts on a newer machine the manufacturer's part is the safer choice where we have it. We never describe a compatible part as the brand's own.
Will a Sew Steady table for the L450 fit a different Bernina model?
Only if that model is named on the table's page. Tables are cut to the bed shape and free-arm position; the names listed on each table are the models the distributor specifies. Email us the other model number before ordering.
Do these parts also fit the Bernina L460?
2 of the 4 items on this page name the L460 as well, because the two models share those parts. The rest do not — check the fits-these-machines list on each part, and see the related machines below.
Upper or lower knife for the L450?
Replace the upper knife first — it is the moving blade and wears several times faster than the lower. Replace the lower only if it is chipped. Both are listed above, each naming the position.
My L450 needs a part that is not listed. Can you get it?
Email the part name and your model number to support@ultimatesewingandvac.com. If the distributor's catalog carries it we will quote it; if the fitment is uncertain we will say so rather than guess.
Do you ship the same day?
No. Orders are released to the warehouse the next business day and tracking is emailed when the parcel ships. We do not hold stock ourselves, so if an item is unavailable after you order we email you first.