{"product_id":"cometic-c3178-est-top-end-gasket-kit-for-yamaha-98mm-bore","title":"Cometic C3178-EST Top End Gasket Kit for Yamaha 98mm Bore","description":"\u003cul\u003e   \u003cli\u003e    \u003cp\u003e     \u003cspan style=\"font-family:lucida sans unicode,lucida grande,sans-serif;\"\u003e\u003cspan style=\"font-size:12px;\"\u003eConstructed from spring steel or graphite\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/li\u003e   \u003cli\u003e    \u003cp\u003e     \u003cspan style=\"font-family:lucida sans unicode,lucida grande,sans-serif;\"\u003e\u003cspan style=\"font-size:12px;\"\u003eSpring steel gaskets are made from a stainless steel shim design coated with a .0001\" thickness of silicone on both sides\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/li\u003e   \u003cli\u003e    \u003cp\u003e     \u003cspan style=\"font-family:lucida sans unicode,lucida grande,sans-serif;\"\u003e\u003cspan style=\"font-size:12px;\"\u003eGraphite material is impervious to fuels, coolants and oils\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/li\u003e   \u003cli\u003e    \u003cp\u003e     \u003cspan style=\"font-family:lucida sans unicode,lucida grande,sans-serif;\"\u003e\u003cspan style=\"font-size:12px;\"\u003eEngine case rebuild gasket kits include all gaskets needed for a lower end rebuild (base gasket not included)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/li\u003e  \u003c\/ul\u003e\n\u003cp\u003eThe Cometic C3178-EST Top End Kit is designed for Yamaha engine applications requiring a 98mm bore gasket solution. This kit provides the essential sealing components needed during top-end service, helping support reliable compression, controlled fluid retention, and proper engine assembly.\u003c\/p\u003e\n\u003cp\u003eManufactured by Cometic, the C3178-EST is intended to help simplify gasket replacement during cylinder, piston, and related top-end work. Its application-specific design supports accurate fitment for compatible Yamaha engines, making it a practical choice for engine rebuilding, maintenance, or performance-focused upgrades.\u003c\/p\u003e\n\u003cp\u003eUse this kit when replacing top-end gaskets as part of a complete service. Confirm the engine application, model year, and required bore specification before installation to ensure compatibility. Professional installation and adherence to the engine manufacturer's torque and assembly procedures are recommended.\u003c\/p\u003e\n\u003cp\u003eBrand: Cometic\u003cbr\u003ePart Number: C3178-EST\u003cbr\u003eApplication: Yamaha\u003cbr\u003eBore Size: 98mm\u003cbr\u003eProduct Type: Top End Gasket Kit\u003cbr\u003eUnit of Measure: Kit\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDesigned for Yamaha engine applications\u003c\/li\u003e\n\u003cli\u003eFits engines with a 98mm bore\u003c\/li\u003e\n\u003cli\u003eSupports top-end gasket replacement and engine service\u003c\/li\u003e\n\u003cli\u003eApplication-specific Cometic design\u003c\/li\u003e\n\u003cli\u003eSupplied as a complete kit\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COMETIC","offers":[{"title":"Default Title","offer_id":67617058717881,"sku":"910885","price":84.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/910885.jpg?v=1790803372","url":"https:\/\/atticusgoods.com\/products\/cometic-c3178-est-top-end-gasket-kit-for-yamaha-98mm-bore","provider":"Atticus Goods","version":"1.0","type":"link"}