{"product_id":"seasierra-5-16-8mm-outboard-primer-bulb-universal-rubber-fuel-line-pump-inline-replacement","title":"SeaSierra 5\/16\" (8mm) Outboard Primer Bulb – Universal Rubber Fuel Line Pump, Inline Replacement","description":"\u003cp\u003e\u003cstrong\u003eThe SeaSierra 5\/16\" (8mm) outboard universal rubber primer bulb is a simple, durable hand-pump that moves fuel from tank to engine for easier cold starts and reliable fuel delivery.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen you need to prime a small outboard motor, this compact rubber primer bulb supplies a quick, tool-free way to transfer fuel and remove air from the line. Built to fit common outboard brands and sized for a 5\/16\" (8mm) inner-diameter hose, the SeaSierra primer bulb is a practical replacement part for aging or damaged fuel connectors. It installs inline between the tank and engine, offering a user-friendly method to restore fuel flow before cranking.\u003c\/p\u003e\n\n\u003ch3\u003eWhat engines and hoses will this SeaSierra primer bulb work with?\u003c\/h3\u003e\n\n\u003cp\u003eThis primer bulb is made to be broadly compatible with many popular outboard makes, including Yamaha, Tohatsu, Mercury, Mariner, Johnson, Evinrude, OMC and Honda. The critical dimension is the inner hose diameter: it is sized for 5\/16\" (8mm) fuel hoses. Many marine fuel hoses and stock outboard connector lines use this common size, making the bulb a versatile replacement.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFits 5\/16\" (8mm) inner-diameter fuel hoses\u003c\/li\u003e\n  \u003cli\u003eCompatible with major outboard brands for tank-to-engine connections\u003c\/li\u003e\n  \u003cli\u003eDesigned as a direct inline replacement for worn primer bulbs\u003c\/li\u003e\n  \u003cli\u003eWorks with standard marine fuel hose materials used on small outboards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install and use the primer bulb?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward: cut the fuel line where you need the bulb, slide hose clamps on, push the hose ends onto the bulb’s tapered fittings, then tighten clamps. To prime, squeeze the bulb several times to draw fuel through and purge air; once steady fuel appears, the engine is ready to start. No special tools are required beyond a hose cutter and clamps.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCut hose squarely to prevent leaks\u003c\/li\u003e\n  \u003cli\u003eUse clamps rated for marine fuel systems\u003c\/li\u003e\n  \u003cli\u003eSqueeze bulb until fuel flow is consistent and free of air\u003c\/li\u003e\n  \u003cli\u003eCheck for leaks after installation and before starting engine\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the material and care considerations for this rubber primer bulb?\u003c\/h3\u003e\n\n\u003cp\u003eThe SeaSierra bulb is molded from fuel-resistant rubber designed to handle gasoline and typical marine fuel blends, but like all rubber parts it is sensitive to long-term UV exposure and harsh storage conditions. Avoid leaving it in direct sunlight for extended periods and store in a cool, shaded area when not in use to extend service life. Inspect periodically for cracking, stiffness or leaks and replace if any deterioration appears.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMade of fuel-resistant rubber for marine use\u003c\/li\u003e\n  \u003cli\u003eKeep out of prolonged direct sunlight to prevent hardening\u003c\/li\u003e\n  \u003cli\u003eInspect seals, fittings and body for cracks or softness\u003c\/li\u003e\n  \u003cli\u003eReplace if fuel odor, swelling, or seepage is detected\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this primer bulb improve starting and performance?\u003c\/h3\u003e\n\n\u003cp\u003eBy manually transferring fuel and eliminating air pockets in the line, the primer bulb helps ensure the carburetor or fuel-injection system receives a steady supply of fuel during startup. That reduces cranking time and misfires associated with air-bound fuel lines. While not a performance enhancer, it reliably restores proper fuel flow for dependable engine starts.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRemoves air pockets for consistent fuel delivery\u003c\/li\u003e\n  \u003cli\u003eSpeeds up cold starts by pre-filling fuel lines\u003c\/li\u003e\n  \u003cli\u003ePrevents dry-cranking that stresses starter systems\u003c\/li\u003e\n  \u003cli\u003eUseful as an emergency repair or routine maintenance part\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The SeaSierra 5\/16\" (8mm) universal rubber primer bulb is aimed at boat owners, marine mechanics and anglers who run small outboard motors and need a dependable inline priming solution. It’s ideal for anyone maintaining older boats, replacing brittle or leaking primer bulbs, or keeping a spare on board for quick field repairs. If your outboard uses 5\/16\" fuel hose and you want a low-cost, easy-to-install replacement that restores reliable fuel flow, this SeaSierra primer bulb is a practical choice.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this primer bulb fit my Yamaha outboard?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, if your fuel hose inner diameter is 5\/16\" (8mm); it’s compatible with many Yamaha outboards.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I prevent the rubber bulb from deteriorating?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Store shaded away from direct sunlight, rinse clean, and inspect regularly for cracks or stiffness.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":48086880616606,"sku":"B0FSCTM33M","price":33.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/seasierra-primer-bulb-front-view_f9d9f8a1-cd27-4620-bd4d-a302fff2d495.jpg?v=1785908871","url":"https:\/\/northtrailauto.ca\/products\/seasierra-5-16-8mm-outboard-primer-bulb-universal-rubber-fuel-line-pump-inline-replacement","provider":"North Trail Auto","version":"1.0","type":"link"}