{"product_id":"fueltech-yamaha-1-8-intake-manifold-to-1-9-cylinder-head-adapter-flange","title":"FuelTech Yamaha 1.8 Intake Manifold to 1.9 Cylinder Head Adapter Flange","description":"\u003cp\u003eThis adapter flange lets a Yamaha 1.8L intake manifold bolt to the 1.9L cylinder head. Use it to put the reinforced 2024+ Yamaha 1.9L head on a 1.8L engine, or to run a 1.8L intake on a new 1.9L WaveRunner.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMatches the 1.8L's round intake runners to the 1.9L head's oval ports\u003c\/li\u003e\n\u003cli\u003eSmooth round-to-oval transition for unobstructed flow\u003c\/li\u003e\n\u003cli\u003e2-piece design aligns with all concentric studs\u003c\/li\u003e\n\u003cli\u003eO-ring seal groove between the two flanges\u003c\/li\u003e\n\u003cli\u003eTotal thickness: 0.656\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eYamaha 1.8L intake manifold with the 1.9L cylinder head from the 2024+ Yamaha 1.9L engines.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What does this flange do?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It adapts a Yamaha 1.8L intake manifold to the 1.9L cylinder head, matching round runners to oval ports.\"}},{\"@type\":\"Question\",\"name\":\"How thick is it?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"0.656\\\" total, so the intake manifold moves only slightly from its original position.\"}},{\"@type\":\"Question\",\"name\":\"How does it seal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The two pieces have an O-ring seal groove between them.\"}},{\"@type\":\"Question\",\"name\":\"When would I need it?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"When fitting the 2024+ 1.9L head to a 1.8L engine, or running a 1.8L intake on a 1.9L WaveRunner.\"}},{\"@type\":\"Question\",\"name\":\"Does it align with the stock studs?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The 2-piece design aligns with all concentric studs.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"Default Title","offer_id":50629969281241,"sku":"5017000691","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2734\/8185\/files\/FuelTech-Yamaha-1800-1900-1.8L-1.9L-Intake-Manifold-Cylinder-Head-Adapter-Flange.jpg?v=1791477319","url":"https:\/\/www.autosportsengineering.com\/products\/fueltech-yamaha-1-8-intake-manifold-to-1-9-cylinder-head-adapter-flange","provider":"Autosports engineering","version":"1.0","type":"link"}