{"product_id":"sierra-47-29499-exhaust-manifold-gasket-18-1902-18-1903","title":"Sierra 47-29499 Exhaust Manifold Gasket | Fits Manifolds 18-1902 \u0026 18-1903","description":"\u003ch2\u003eSierra 47-29499 Exhaust Manifold Gasket\u003c\/h2\u003e\u003cp\u003eA direct-fit replacement exhaust manifold gasket for marine inboard and stern drive engines. The \u003cstrong\u003eSierra 47-29499\u003c\/strong\u003e is engineered to seal the joint between the exhaust manifold and the engine block, preventing exhaust leaks that can lead to overheating, corrosion, and dangerous carbon monoxide buildup in the bilge. Built to meet or exceed OEM specifications for a reliable, long-lasting seal.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eCompatible manifolds:\u003c\/strong\u003e Sierra 18-1902, 18-1903\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThis gasket is the correct choice when servicing or replacing manifolds 18-1902 or 18-1903. As with any exhaust gasket, always install a fresh gasket any time the manifold is removed — reusing a compressed gasket is a common cause of post-service exhaust leaks. If you're doing a full exhaust system refresh, also consider the compatible \u003ca href=\"\/products\/11077679153188\"\u003eSierra Exhaust Manifold 47-19563\u003c\/a\u003e or \u003ca href=\"\/products\/11077679185956\"\u003eSierra Exhaust Manifold 47-19572\u003c\/a\u003e. For elbow gaskets on the same system, see the \u003ca href=\"\/products\/11120008331300\"\u003eSierra 47-06729 Exhaust Elbow Gasket 2-Pack\u003c\/a\u003e or the \u003ca href=\"\/products\/8131641835556\"\u003eSierra 18-0943-2 Exhaust Elbow Gasket 2-Pack\u003c\/a\u003e. SKU: 47-29499.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51199432884260,"sku":"47-29499","price":52.59,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-29499.jpg?v=1785605269","url":"https:\/\/marisolmarine.com\/products\/sierra-47-29499-exhaust-manifold-gasket-18-1902-18-1903","provider":"Marisol Marine Company","version":"1.0","type":"link"}