{"id":14674,"date":"2023-09-08T08:46:30","date_gmt":"2023-09-08T08:46:30","guid":{"rendered":"https:\/\/gardentoolspares.com\/?post_type=product&#038;p=14674"},"modified":"2026-07-20T13:47:42","modified_gmt":"2026-07-20T13:47:42","slug":"yamaha-mercury-mariner-25-hp-70-hp-outboard-water-pump-gasket","status":"publish","type":"product","link":"https:\/\/gardengeniusparts.com\/gtstest\/product\/yamaha-mercury-mariner-25-hp-70-hp-outboard-water-pump-gasket\/","title":{"rendered":"YAMAHA MERCURY MARINER 25 HP &#8211; 70 HP Outboard Water Pump Gasket"},"content":{"rendered":"<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">The <strong>Gasket Genius water pump gasket<\/strong> is suited to <strong>Yamaha<\/strong>, <strong>Mercury<\/strong> and <strong>Mariner 25 HP - 70 HP<\/strong> outboard engines. It seals the <strong>water pump housing<\/strong> around the <strong>impeller<\/strong>, the rubber vane component that circulates <strong>cooling water<\/strong> through the engine. As this gasket <strong>deteriorates, compresses or gets damaged<\/strong>, the housing seal weakens, letting <strong>cooling water<\/strong> bypass the pump chamber instead of being pushed through the cooling circuit \u2014 a drop in <strong>water pump efficiency<\/strong> that can leave the engine <strong>running hot<\/strong>. Replacing the gasket whenever the <strong>water pump<\/strong> is opened for servicing or <strong>impeller<\/strong> replacement helps get the pump sealing and cooling properly again.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>Fits specified models:<\/strong><\/p>\n<ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\" dir=\"auto\">\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Yamaha 25 HP - 70 HP outboard<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Mercury 25 HP - 70 HP outboard<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Mariner 25 HP - 70 HP outboard<\/li>\n<\/ul>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>Replaces part number:<\/strong><\/p>\n<ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\" dir=\"auto\">\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">663-44315-A0<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">27-81417M<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The <strong>Gasket Genius water pump gasket<\/strong> fits <strong>Yamaha<\/strong>, <strong>Mercury<\/strong> and <strong>Mariner 25 HP - 70 HP<\/strong> outboard engines, sealing the <strong>water pump<\/strong> to maintain proper <strong>cooling water<\/strong> circulation.<\/p>\n","protected":false},"featured_media":20398,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[103,196,5112],"product_tag":[4124,5146,4474,4473,4420,5184,392,288,4528,4265,4182,4472,4471,4421,4181,417,4284,2064],"class_list":["post-14674","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-engine-parts","product_cat-gaskets-4","product_cat-marine-parts","product_tag-4124","product_tag-25-hp","product_tag-27-81417m","product_tag-663-44315-a0","product_tag-4420","product_tag-70-hp","product_tag-engine","product_tag-gasket","product_tag-gasketgenius","product_tag-hp","product_tag-marine","product_tag-mariner","product_tag-mercruiser","product_tag-mercury","product_tag-outboard","product_tag-pump","product_tag-water","product_tag-yamaha"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.7 - 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