Singer D2134

SINGER® Class 15 Bobbins - Transparent

D2134 is Singer’s four-pack of transparent Class 15 plastic bobbins. It matches the bobbin type Singer specifies for the Heavy Duty 4423.

Before ordering: Do not substitute metal Class 15 or Class 15J bobbins for the transparent Class 15 type specified for the 4423.

ReferenceD2134

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Singer specifies transparent Class 15 bobbins for the Heavy Duty 4423 and recommends Singer or Inspira branded bobbins.

Fit and restrictions

Singer identifies D2134 as four transparent Class 15 plastic bobbins. This is a match of the documented bobbin type; D2134’s product page does not list 4423 individually.
The D2134 pack contains four bobbins. Other pack sizes and regional product references remain separate products.

Do not substitute metal Class 15 or Class 15J bobbins for the transparent Class 15 type specified for the 4423.
Install and wind the bobbin using the 4423 manual. This bobbin match does not establish fit for a bobbin case or other accessory.

Bobbins

Part: Transparent Class 15 bobbin · Class 15 Transparent

Fit and restrictions

Singer specifies transparent Class 15 bobbins for the Heavy Duty 4423 and recommends Singer or Inspira-branded bobbins for best results.

The machine uses a top drop-in bobbin system.
Class number, material and profile all matter; a similarly sized metal bobbin is not an equivalent choice.
Needle selection depends on fabric and thread, so it is intentionally kept separate from this exact bobbin page.

Restrictions

Do not substitute a generic metal Class 15 bobbin merely because the diameter looks similar.
Avoid listings that omit the bobbin class or show several incompatible shapes.