01Part matched to this model

Bobbins for Singer Heavy Duty 4423

These bobbins match Singer Heavy Duty 4423. Check the full model, suffix and reference again on the retailer page before ordering.

Checked with the manufacturerManufacturer source availableLast checked 25 Aug 2026

The reference to look for

Singer Class 15 transparent bobbin

Bobbins

Checked with the manufacturer

Reference: Class 15 · transparent plastic

Singer specifies transparent Class 15 bobbins for this top drop-in model. A similar-looking metal bobbin is not an equivalent.

Details to compare

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02Verify before buying

Match the complete machine model and every suffix.
Compare the listed reference and technical notes with the retailer page.
Check the sales region; electrical parts require separate connector and rating checks.