{"product_id":"brother-bobbin-case-part-xc8993321-oem-replacement","title":"Brother Bobbin Case – Part #XC8993321 (OEM Replacement)","description":"\u003cp data-start=\"179\" data-end=\"301\"\u003eKeep your stitches clean, consistent, and perfectly tensioned with this \u003cstrong data-start=\"251\" data-end=\"300\"\u003egenuine Brother Bobbin Case – Part #XC8993321\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"303\" data-end=\"516\"\u003eThe bobbin case is one of the most critical components in your sewing machine — it controls \u003cstrong data-start=\"395\" data-end=\"441\"\u003ebobbin thread tension and stitch formation\u003c\/strong\u003e. If your current case is worn, damaged, or out of alignment, it can cause:\u003c\/p\u003e\n\u003cul data-start=\"517\" data-end=\"585\"\u003e\n\u003cli data-section-id=\"qrwsic\" data-start=\"517\" data-end=\"534\"\u003eThread bunching\u003c\/li\u003e\n\u003cli data-section-id=\"17yfzof\" data-start=\"535\" data-end=\"553\"\u003eSkipped stitches\u003c\/li\u003e\n\u003cli data-section-id=\"1oqr6vj\" data-start=\"554\" data-end=\"570\"\u003eUneven tension\u003c\/li\u003e\n\u003cli data-section-id=\"lpv7ug\" data-start=\"571\" data-end=\"585\"\u003eMachine jams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"587\" data-end=\"671\"\u003eThis OEM replacement restores \u003cstrong data-start=\"617\" data-end=\"670\"\u003esmooth operation and factory-level stitch quality\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"673\" data-end=\"676\"\u003e\n\u003ch2 data-section-id=\"1j5qwet\" data-start=\"678\" data-end=\"697\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"681\" data-end=\"697\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"698\" data-end=\"901\"\u003e\n\u003cli data-section-id=\"myv2wr\" data-start=\"698\" data-end=\"737\"\u003e✅ Genuine \u003cstrong data-start=\"710\" data-end=\"737\"\u003eBrother OEM bobbin case\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rowjrp\" data-start=\"738\" data-end=\"792\"\u003e✅ Precision-engineered for \u003cstrong data-start=\"767\" data-end=\"792\"\u003eproper thread tension\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"19nsqyl\" data-start=\"793\" data-end=\"825\"\u003e✅ Direct drop-in replacement\u003c\/li\u003e\n\u003cli data-section-id=\"1ka6z8o\" data-start=\"826\" data-end=\"858\"\u003e✅ Durable metal construction\u003c\/li\u003e\n\u003cli data-section-id=\"2hxwx6\" data-start=\"859\" data-end=\"901\"\u003e✅ Restores \u003cstrong data-start=\"872\" data-end=\"901\"\u003econsistent stitch quality\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"903\" data-end=\"906\"\u003e\n\u003ch2 data-section-id=\"x5ub0l\" data-start=\"908\" data-end=\"939\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"911\" data-end=\"939\"\u003eCommon Issues This Fixes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"940\" data-end=\"1136\"\u003e\n\u003cli data-section-id=\"fex4tl\" data-start=\"940\" data-end=\"992\"\u003eBird nesting \/ thread bunching underneath fabric\u003c\/li\u003e\n\u003cli data-section-id=\"815o9t\" data-start=\"993\" data-end=\"1023\"\u003eSkipped or uneven stitches\u003c\/li\u003e\n\u003cli data-section-id=\"8vljdn\" data-start=\"1024\" data-end=\"1063\"\u003eBobbin thread not catching properly\u003c\/li\u003e\n\u003cli data-section-id=\"1wg5zon\" data-start=\"1064\" data-end=\"1104\"\u003eTension issues that won’t adjust out\u003c\/li\u003e\n\u003cli data-section-id=\"1lr1d6h\" data-start=\"1105\" data-end=\"1136\"\u003eDamaged or bent bobbin case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1138\" data-end=\"1141\"\u003e\n\u003ch2 data-section-id=\"z6p6a6\" data-start=\"1143\" data-end=\"1178\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1146\" data-end=\"1178\"\u003eGuaranteed Fit Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1w7qmz0\" data-start=\"1180\" data-end=\"1221\"\u003e✔ Fits Brother Sewing Machine Models:\u003c\/h3\u003e\n\u003cp data-start=\"1222\" data-end=\"1807\"\u003eAE1700, 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\u003c\/p\u003e\n\u003chr data-start=\"1809\" data-end=\"1812\"\u003e\n\u003ch2 data-section-id=\"1tuv18y\" data-start=\"1814\" data-end=\"1843\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1817\" data-end=\"1843\"\u003eAlternate Part Numbers\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1844\" data-end=\"1886\"\u003eXC8993021, XC8993221, XE9326001, XG4227001\u003c\/p\u003e\n\u003chr data-start=\"1888\" data-end=\"1891\"\u003e\n\u003ch2 data-section-id=\"wimzy2\" data-start=\"1893\" data-end=\"1918\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1896\" data-end=\"1918\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1919\" data-end=\"2063\"\u003e\n\u003cli data-section-id=\"led9nb\" data-start=\"1919\" data-end=\"1964\"\u003eDrop-in replacement — installs in seconds\u003c\/li\u003e\n\u003cli data-section-id=\"8zof5m\" data-start=\"1965\" data-end=\"2018\"\u003eEnsure bobbin is inserted correctly after install\u003c\/li\u003e\n\u003cli data-section-id=\"1236g1f\" data-start=\"2019\" data-end=\"2063\"\u003eAlways recheck thread path before sewing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2065\" data-end=\"2068\"\u003e\n\u003ch2 data-section-id=\"5f5awq\" data-start=\"2070\" data-end=\"2098\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2073\" data-end=\"2098\"\u003eWhy This Part Matters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2099\" data-end=\"2301\"\u003eYour bobbin case is the \u003cstrong data-start=\"2123\" data-end=\"2155\"\u003efoundation of stitch quality\u003c\/strong\u003e. Even a slightly damaged case can throw off your entire machine — replacing it is often the \u003cstrong data-start=\"2248\" data-end=\"2276\"\u003efastest and cheapest fix\u003c\/strong\u003e for major sewing issues.\u003c\/p\u003e\n\u003chr data-start=\"2303\" data-end=\"2306\"\u003e\n\u003ch2 data-section-id=\"1rr8uk8\" data-start=\"2308\" data-end=\"2340\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2311\" data-end=\"2340\"\u003eWhy Buy From ThreadWorks?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2341\" data-end=\"2498\"\u003eWe specialize in \u003cstrong data-start=\"2358\" data-end=\"2399\"\u003ereal sewing machine repairs and parts\u003c\/strong\u003e, not guesswork.\u003cbr data-start=\"2415\" data-end=\"2418\"\u003eEvery part we list is built to help you \u003cstrong data-start=\"2458\" data-end=\"2497\"\u003efix your machine fast and correctly\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"2500\" data-end=\"2503\"\u003e\n\u003ch2 data-section-id=\"1jdhu1s\" data-start=\"2505\" data-end=\"2516\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2508\" data-end=\"2516\"\u003eFAQs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2518\" data-end=\"2610\"\u003e\u003cstrong data-start=\"2518\" data-end=\"2556\"\u003eQ: Is this a genuine Brother part?\u003c\/strong\u003e\u003cbr data-start=\"2556\" data-end=\"2559\"\u003eA: Yes — this is a genuine OEM Brother bobbin case.\u003c\/p\u003e\n\u003cp data-start=\"2612\" data-end=\"2733\"\u003e\u003cstrong data-start=\"2612\" data-end=\"2648\"\u003eQ: Will this fix tension issues?\u003c\/strong\u003e\u003cbr data-start=\"2648\" data-end=\"2651\"\u003eA: In many cases, yes — especially if your current bobbin case is worn or damaged.\u003c\/p\u003e\n\u003cp data-start=\"2735\" data-end=\"2871\"\u003e\u003cstrong data-start=\"2735\" data-end=\"2781\"\u003eQ: How do I know if my bobbin case is bad?\u003c\/strong\u003e\u003cbr data-start=\"2781\" data-end=\"2784\"\u003eA: Signs include thread bunching, inconsistent stitches, or visible damage to the case.\u003c\/p\u003e\n\u003cp data-start=\"2873\" data-end=\"2957\"\u003e\u003cstrong data-start=\"2873\" data-end=\"2904\"\u003eQ: Is this hard to install?\u003c\/strong\u003e\u003cbr data-start=\"2904\" data-end=\"2907\"\u003eA: Not at all — it’s a simple drop-in replacement.\u003c\/p\u003e","brand":"Brother","offers":[{"title":"Default Title","offer_id":45532377284710,"sku":null,"price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/7872\/8294\/files\/XC8993321-top.jpg?v=1776705997","url":"https:\/\/threadworks.com\/products\/brother-bobbin-case-part-xc8993321-oem-replacement","provider":"Thread Works ","version":"1.0","type":"link"}