Singer 403A Parts & Compatibility Guide
401A with removable discs instead of built-in cams. Parts interchangeable with 401A.
Compatible parts for the Singer 403A
| Part | Specs | Where to buy |
|---|---|---|
| Feed Dog (Slant Family) | Slant-needle zigzag feed assembly | eBayAmazonAliExpress |
| Bobbin Case | Class 66 bobbin case, Singer part #45751 | eBayAmazonAliExpress |
| Needle Plate / Throat Plate | Slant needle zigzag plate with feed cover | eBayAmazonAliExpress |
| Motor Belt / Band | V-belt, motor to handwheel (Singer vintage family) | eBayAmazonAliExpress |
| Bobbin (Class 66) | Class 66 metal bobbins, 10-pack | eBayAmazonAliExpress |
Buying channels: we link to all major sources so you can compare — eBay for used/NOS parts, Amazon for fast shipping, AliExpress for factory-direct prices. Links may be affiliate links; they cost you nothing extra.