Brother Bobbin Case – Part #XC8993321 (OEM Replacement)

Keep your stitches clean, consistent, and perfectly tensioned with this genuine Brother Bobbin Case – Part #XC8993321.

The bobbin case is one of the most critical components in your sewing machine — it controls bobbin thread tension and stitch formation. If your current case is worn, damaged, or out of alignment, it can cause:

• Thread bunching
• Skipped stitches
• Uneven tension
• Machine jams

This OEM replacement restores smooth operation and factory-level stitch quality.

Key Features

• ✅ Genuine Brother OEM bobbin case
• ✅ Precision-engineered for proper thread tension
• ✅ Direct drop-in replacement
• ✅ Durable metal construction
• ✅ Restores consistent stitch quality

Common Issues This Fixes

• Bird nesting / thread bunching underneath fabric
• Skipped or uneven stitches
• Bobbin thread not catching properly
• Tension issues that won’t adjust out
• Damaged or bent bobbin case

Guaranteed Fit Compatibility

✔ Fits Brother Sewing Machine Models:

AE1700, BM2600, BM2700, BM2700AS, BM3500, BM3600, Comfort 10, Comfort 12, Comfort 15, Comfort 25A, Comfort 35A, HQ33, HQ17, HQ27, L15, L25, L30, L35, L40, LS-590, LX2500, LX3817A, RL417, RS11, RS5, RS7, RS9, SB170 Simplicity, SB530T Simplicity, SF100, SF200, SF250, SF300, Universal 17, UJ417, Vesta Ministar Series (Pink, Blue, Rose Violet, Rose Wine), XL2120, XL2120PRO, XL2130, XL2130NT, XL2140, XL2150, XL2220, XL2220NT, XL2220PLUS, XL2230, XL2240, XL2250, XL2600, XL-2600I, XL2610, XL2620, XL3500, XL3500I, XL3500T, XL3510, XL3520, XL3600, XL3750, XL3750FS, XL3800, XM3700, XN1700

Alternate Part Numbers

XC8993021, XC8993221, XE9326001, XG4227001

Installation Notes

• Drop-in replacement — installs in seconds
• Ensure bobbin is inserted correctly after install
• Always recheck thread path before sewing

Why This Part Matters

Your bobbin case is the foundation of stitch quality. Even a slightly damaged case can throw off your entire machine — replacing it is often the fastest and cheapest fix for major sewing issues.

Why Buy From ThreadWorks?

We specialize in real sewing machine repairs and parts, not guesswork.
Every part we list is built to help you fix your machine fast and correctly.

FAQs

Q: Is this a genuine Brother part?
A: Yes — this is a genuine OEM Brother bobbin case.

Q: Will this fix tension issues?
A: In many cases, yes — especially if your current bobbin case is worn or damaged.

Q: How do I know if my bobbin case is bad?
A: Signs include thread bunching, inconsistent stitches, or visible damage to the case.

Q: Is this hard to install?
A: Not at all — it’s a simple drop-in replacement.