{"product_id":"heavy-duty-4-pack-fuel-primer-bulbs-universal-8mm","title":"Heavy Duty 4 Pack Fuel Primer Bulbs Universal 8Mm Engine Bleeding Kit For Quick Gas Transfer Auto Marine Build Rubber Composite Drop In No Nonsense Swap Smooth Operation","description":"\u003cdiv\u003eHeavy Duty 4-Pack Fuel Primer Bulbs For Reliable Siphoning\u003cbr\u003e\n✔️ Metal rubber housing 0.31in ports 5.68 by 1.69in shell closes \u003cp\u003eThese four manual fuel siphon pumps are heavy-duty hand primers designed to move gasoline quickly through carburetors and low-pressure fuel lines. Mechanics, boat owners, and weekend wrenchers rely on them for fast engine bleeding and reliable cold-start setups across trucks, motorcycles, and marine outboards.\u003c\/p\u003e ✅ One-way flow valve stops backflow and locks steady pressure during each squeeze\n✅ Stepped 0.31in hose ports seal tight to prevent leaks under heavy pumping\n✅ Matte black rubber and metal shell measures 5.68 by 1.69 inches for compact storage\n✅ Clear print arrows mark intake and output lines so setup stays mistake-free\n✅ Four-unit pack covers full engine rebuilds and keeps spares handy in the toolbox\n\u003cbr\u003e \u003cp\u003e💡 What is a heavy duty fuel primer bulb used for when replacing carburetors and fuel lines?\u003c\/p\u003e\nThese manual siphon pumps clear trapped air and push clean gasoline straight into low-pressure systems without guesswork. Here is how they handle daily engine prep:\n- Durable aluminum and composite shells withstand repeated squeezing without leaking gas or losing shape\n- One-way internal mechanisms lock forward flow so you never fight suction loss mid-pump\n- Generous chamber size pulls maximum volume per stroke to cut down bleeding time by half\n- Tapered 0.31-inch entry ports grip standard rubber hoses tightly to keep your workspace clean and make swaps totally handy\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49330105483499,"sku":"VXB0GF7HJ48G","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61QydkN0uCL.jpg?v=1788293001","url":"https:\/\/vxb.com\/products\/heavy-duty-4-pack-fuel-primer-bulbs-universal-8mm","provider":"VXB Bearings","version":"1.0","type":"link"}