{"product_id":"upgraded-exhaust-manifold-kit-for-2015-2017-lincoln-navigator-3-5l-ecoboost","title":"Upgraded Exhaust Manifold Kit For 2015-2017 Lincoln Navigator 3.5L Ecoboost","description":"\u003cp\u003e\u003ccite index=\"8-1\"\u003eThis Upgraded Exhaust Manifold Kit is designed for 2015–2017 Lincoln Navigator models equipped with the 3.5L EcoBoost engine and uses all 11 stud locations for a more secure, even seal against the cylinder head.\u003c\/cite\u003e It replaces factory manifolds suffering from \u003ccite index=\"4-18,4-19\"\u003ea design flaw where OEM stud locations are underutilized—the cylinder head has threaded holes for 11 exhaust studs, but the OE manifold only utilizes 8 of those locations.\u003c\/cite\u003e \u003ccite index=\"8-6,8-7\"\u003eMade from high-silicon molybdenum cast iron, these upgraded manifolds are significantly more resistant to thermal warping and cracking, with exhaust runners port-matched and redesigned to increase flow by over 30% compared to stock manifolds.\u003c\/cite\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ccite index=\"6-12\"\u003e2015–2017 Lincoln Navigator — 3.5L EcoBoost V6\u003c\/cite\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e \u003ccite index=\"1-2\"\u003e1x Performance Drivers Side Manifold, 1x Performance Passenger Side Manifold, 16x W712244-S300 Manifold Studs, 16x W701706-S440 Grade 10 Locking Manifold Nuts, Install Manual\u003c\/cite\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e \u003ccite index=\"8-6\"\u003eHigh-silicon molybdenum cast iron\u003c\/cite\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStud Coverage:\u003c\/strong\u003e \u003ccite index=\"8-1,8-5\"\u003eUses all 11 stud locations for secure, even clamping pressure\u003c\/cite\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlow Improvement:\u003c\/strong\u003e \u003ccite index=\"8-7\"\u003eExhaust runners port-matched and redesigned to increase flow by over 30% compared to stock\u003c\/cite\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Replacement:\u003c\/strong\u003e \u003ccite index=\"3-1\"\u003eReplaces Ford OEM part numbers BL3Z-9430-B, BL3Z-9430-D, BL3Z-9431-B, BL3Z-9431-D\u003c\/cite\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdditional Hardware Required:\u003c\/strong\u003e \u003ccite index=\"1-4\"\u003eOEM manifold gaskets and turbine housing gaskets are recommended for installation\u003c\/cite\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003e\u003ccite index=\"4-14\"\u003eProfessional installation is required.\u003c\/cite\u003e This is a direct replacement using factory mounting points, but gasket replacement and proper torque sequencing are critical for preventing exhaust leaks and achieving the full benefit of the upgraded 11-stud design.\u003c\/p\u003e\n\n\u003cp\u003eCheck local emissions regulations before purchase. Professional installation is recommended.\u003c\/p\u003e\n\n\u003cp\u003eGet the right part the first time.\u003c\/p\u003e","brand":"Performance Parts Factory","offers":[{"title":"Default Title","offer_id":52915765444917,"sku":"LN-544-1517","price":278.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/5036\/3957\/files\/LN-544-1517-1.webp?v=1780274058","url":"https:\/\/www.performancepartsfactory.com\/products\/upgraded-exhaust-manifold-kit-for-2015-2017-lincoln-navigator-3-5l-ecoboost","provider":"Performance Parts Factory","version":"1.0","type":"link"}