{"id":14612,"date":"2023-08-30T15:13:17","date_gmt":"2023-08-30T15:13:17","guid":{"rendered":"https:\/\/gardentoolspares.com\/?post_type=product&#038;p=14612"},"modified":"2026-07-20T13:08:56","modified_gmt":"2026-07-20T13:08:56","slug":"yamaha-4a-4b-5c-4-hp-5-hp-outboard-upper-casing-gasket","status":"publish","type":"product","link":"https:\/\/gardengeniusparts.com\/gtstest\/product\/yamaha-4a-4b-5c-4-hp-5-hp-outboard-upper-casing-gasket\/","title":{"rendered":"YAMAHA 4A 4B 5C 4 HP &#8211; 5 HP Outboard Upper Casing Gasket"},"content":{"rendered":"<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">The <strong>Gasket Genius upper casing gasket<\/strong> is designed for <strong>Yamaha 4A, 4B, 5C, 4 HP - 5 HP<\/strong> outboard engines. It fits between the <strong>upper casing<\/strong> (<strong>driveshaft housing<\/strong>) and the <strong>powerhead<\/strong>, forming the seal that keeps <strong>exhaust gases<\/strong> and <strong>cooling water<\/strong> properly directed as they pass from the engine into the lower unit. If this gasket <strong>wears down, compresses or gets damaged<\/strong>, the joint between the powerhead and upper casing can no longer seal tightly, which lets <strong>exhaust or water leak out<\/strong> at this point and disrupts normal exhaust and cooling flow through the unit. Whenever the <strong>upper casing<\/strong> is separated from the <strong>powerhead<\/strong> during a service, fitting a new gasket here restores that seal.<\/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 4A outboard<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Yamaha 4B outboard<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Yamaha 5C 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\">6E0-45113-A1<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<div class=\"contents\">\n<div class=\"group relative relative pb-[var(--msg-assistant-pb,0.75rem)]\" data-is-streaming=\"false\">\n<div class=\"font-claude-response relative leading-[1.65rem] [&amp;_pre&gt;div]:bg-bg-000\/50 [&amp;_pre&gt;div]:border-0.5 [&amp;_pre&gt;div]:border-border-400 [&amp;_.ignore-pre-bg&gt;div]:bg-transparent [&amp;_.standard-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&amp;_.standard-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8 [&amp;_.progressive-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&amp;_.progressive-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8\">\n<div>\n<div class=\"grid grid-rows-[auto_auto] min-w-0\">\n<div class=\"row-start-2 col-start-1 relative grid grid-rows-[auto_auto] isolate min-w-0\">\n<div class=\"row-start-1 col-start-1 relative z-[2] min-w-0\">\n<div>\n<div>\n<div class=\"standard-markdown grid-cols-1 grid [&amp;_&gt;_*]:min-w-0 gap-3 [&amp;_&gt;_*:last-child]:mb-0 standard-markdown\">\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">The <strong>Gasket Genius upper casing gasket<\/strong> is designed for <strong>Yamaha 4A, 4B, 5C, 4 HP - 5 HP<\/strong> outboard engines, sealing the joint between the <strong>upper casing<\/strong> and <strong>powerhead<\/strong>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"featured_media":20393,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[103,196,5112],"product_tag":[4414,4431,4432,4415,4433,4434,829,392,288,4528,4265,4182,4181,3027,2064],"class_list":["post-14612","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-engine-parts","product_cat-gaskets-4","product_cat-marine-parts","product_tag-4414","product_tag-4a","product_tag-4b","product_tag-4415","product_tag-5c","product_tag-6e0-45113-a1","product_tag-casing","product_tag-engine","product_tag-gasket","product_tag-gasketgenius","product_tag-hp","product_tag-marine","product_tag-outboard","product_tag-upper","product_tag-yamaha"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.7 - 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