{"product_id":"syiono-primary-cover-gasket-kit-for-harley-dyna-twin-cam-softail-1999-2006-complete-seal-clutch-set","title":"Syiono Primary Cover Gasket Kit for Harley Dyna \u0026 Twin Cam Softail 1999-2006 Complete Seal \u0026 Clutch Set","description":"\u003cp\u003e\u003cstrong\u003eSyiono's primary cover gasket kit is a complete replacement set designed to restore a leak-free primary and clutch area on 1999–2005 Harley Dyna and 1999–2006 Twin Cam Softail models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis gasket and seal kit collects the most commonly replaced primary cover parts into one package so you can remove, service, and reinstall the primary cover and derby plate without searching for individual pieces. It includes O-rings, oil seals, foam gaskets and the derby\/clutch cover gasket sized for Twin Cam 88\" and 95\" engines. The components are manufactured from materials selected to match OEM fit and function for a reliable service repair.\u003c\/p\u003e\n\n\u003ch3\u003eWhat parts are included and why do they matter?\u003c\/h3\u003e\n\u003cp\u003eThe kit brings together the seals and gaskets you'll typically replace during a clutch or primary cover job. Using fresh gaskets and seals prevents oil seepage and helps maintain proper clutch and primary chain lubrication.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e11147 O-ring for proper sealing at specified interfaces\u003c\/li\u003e\n  \u003cli\u003e12052A and 12066 oil seals to stop shaft and bearing leaks\u003c\/li\u003e\n  \u003cli\u003e25416-70 or 25416-99 derby\/clutch cover gasket made for Twin Cam 88\" and 95\" models\u003c\/li\u003e\n  \u003cli\u003eInspection foam gasket (60567 series) and primary foam gasket (60539-94) for tight coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich Harley models and years is this compatible with?\u003c\/h3\u003e\n\u003cp\u003eThis Syiono kit is tailored to the era of Harley engines that share similar primary and derby cover layouts. Confirm the year and engine type before ordering to ensure correct fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Harley Dyna models from 1999 through 2005\u003c\/li\u003e\n  \u003cli\u003eCompatible with Twin Cam Softail models from 1999 through 2006\u003c\/li\u003e\n  \u003cli\u003eFits Twin Cam 88\" and 95\" primary\/derby configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will using this kit affect a primary or clutch service?\u003c\/h3\u003e\n\u003cp\u003eInstalling all new seals and gaskets during a primary cover removal reduces the risk of leaks and eliminates the need for repeat disassembly. The comprehensive set saves time and ensures each contact surface has the correct replacement part.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces post-service oil seepage at cover joints and shafts\u003c\/li\u003e\n  \u003cli\u003ePrevents contamination of clutch components from leaking oil\u003c\/li\u003e\n  \u003cli\u003eStreamlines maintenance by supplying needed parts in one kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these parts OEM or aftermarket, and what material quality can I expect?\u003c\/h3\u003e\n\u003cp\u003eSyiono offers aftermarket components engineered to match the original geometry and sealing properties. Materials are selected for durability and resistance to oil, heat, and vibration common in primary housings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFoamet inspection and primary gaskets designed for conforming seals\u003c\/li\u003e\n  \u003cli\u003eOil seals and O-rings molded to resist common service temperatures and fluids\u003c\/li\u003e\n  \u003cli\u003eDerby\/clutch cover gasket cut to match Twin Cam cover bolt pattern\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This kit is intended for motorcycle owners, independent mechanics, and restoration shops working on late‑1990s to mid‑2000s Harley Dyna and Twin Cam Softail bikes. It’s especially useful when you plan a clutch service, primary inspection, or derby plate removal and want a single, organized set of replacement seals and gaskets to ensure a proper reseal.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit fit a 2004 Harley Dyna?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This Syiono kit is compatible with Harley Dyna models from 1999 through 2005, including 2004 Dynas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the package include the derby cover gasket?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It includes the 25416-70 or 25416-99 derby\/clutch cover gasket suitable for Twin Cam models.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Syiono","offers":[{"title":"Default Title","offer_id":48086084092062,"sku":"B0FCMDH6QH","price":49.54,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/syiono-primary-cover-kit-front-packaging.jpg?v=1785883836","url":"https:\/\/northtrailauto.ca\/products\/syiono-primary-cover-gasket-kit-for-harley-dyna-twin-cam-softail-1999-2006-complete-seal-clutch-set","provider":"North Trail Auto","version":"1.0","type":"link"}