{"id":36349,"date":"2026-08-14T14:34:16","date_gmt":"2026-08-14T19:34:16","guid":{"rendered":"https:\/\/orduz-usa.com\/?post_type=product&p=36349"},"modified":"2026-08-17T11:58:54","modified_gmt":"2026-08-17T16:58:54","slug":"singer-421326-421325-spool-holder","status":"publish","type":"product","link":"https:\/\/orduz-usa.com\/en\/producto\/auto-draftcaja-bobina-singer-421326-421325\/","title":{"rendered":"Singer Apollo 421326 421325 Bobbin Case for #3 Drop-In Sewing Machine-"},"content":{"rendered":"
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Singer 421326 \/ 421325 Apollo Bobbin Case<\/h3>\n

The Singer Spool Box 421326<\/strong>, also related to the reference 421325<\/strong>, is a replacement part used in various Singer home sewing machines with a top-loading bobbin system. In English, it is mainly known as Singer Apollo Bobbin Case<\/strong>, Bobbin Case Holder<\/strong> o Drop-In Bobbin Case<\/strong>, terms commonly used by technicians, distributors, and users looking for replacement parts for Singer machines in the United States.<\/p>\n

This part is part of the system that houses the bobbin and plays a key role in stitch formation. The case keeps the bobbin properly positioned while the lower thread works in conjunction with the needle thread. When this component is in good condition, it contributes to uniform thread feeding and stable machine operation.<\/p>\n

Singer Apollo Replacement Part for the Drop-In System<\/h3>\n

The Singer Spool Box 421326<\/strong> corresponds to the well-known system Apollo<\/strong>, used in many popular Singer models. It is installed on machines where the bobbin is inserted from the top, a system known in English as Top Drop-In Bobbin<\/strong>.<\/p>\n

Depending on the catalog or supplier, this replacement part may be listed under various related part numbers, including 421326, 421325, 421325-000, 421325-001, 421325-002, and 421326-901<\/strong>. For this reason, we recommend verifying both the part number and the physical condition of the part before replacing it.<\/p>\n

These variations in part numbers are important for technicians and distributors, since a user may search for the same type of replacement part using a part number found in an old manual, on the installed part, or in another Singer catalog.<\/p>\n

When should you replace the coil housing?<\/h3>\n

With continued use of the sewing machine, the bobbin case may show signs of wear, warping, scratches, or damage caused by broken needles. Marks may also appear in the areas where the thread passes through.<\/p>\n

A worn-out bobbin case can contribute to problems such as tangled lower thread, uneven tension, noise in the bobbin area, difficulty forming the stitch, or thread buildup under the fabric.<\/p>\n

In these cases, check and replace the Singer Apollo Bobbin Case 421326<\/strong> This may be part of the maintenance required to restore the machine to proper working order. However, it is also a good idea to inspect the needle, bobbin, hook, and threading before concluding that the case is the sole cause of the problem.<\/p>\n

Compatible with various Singer sewing machines<\/h3>\n

References 421326 and 421325<\/strong> They are associated with a wide variety of Singer home sewing machines. Related models include various machines from the Singer 500, 1000, 2000, 4000, 6000, 7000, 8000, and 9000 series, as well as models from the CG line.<\/p>\n

Among the well-known models are Singer 353, 354, 514, 533, 534, 538, 1022, 1247, 1263, 1280, 1288, 2210, 2430, 2950, 3101, 3102, 3103, 4325, 4530, 5050, 6212, 7101, 7102, 7211, 8220, 9005, 9130, 9500, 9600, CG500, CG550, and CG590<\/strong>, among others.<\/p>\n

Due to the large number of models and possible manufacturing variations, we recommend Compare the currently installed coil box with the photo, design, and part number of the replacement part before purchasing<\/strong>.<\/p>\n

Singer Bobbin Case for Technicians, Repair Shops, and Distributors<\/h3>\n

The Singer Bobbin Case 421326 \/ 421325<\/strong> It is a useful replacement part for service technicians, repair shops, distributors, and owners of Singer machines who need to replace a worn or damaged case.<\/p>\n

At Orduz USA<\/strong> We offer replacement parts for Singer sewing machines and other brands for repair, maintenance, and distribution. If you're looking for Singer sewing machine parts<\/strong>, Singer Bobbin Case<\/strong>, Apollo Bobbin Case<\/strong>, Drop-In Bobbin Case<\/strong> or a Singer Spool Box 421326<\/strong>, this reference is an important option to check on compatible machines.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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