{"product_id":"fusch-electric-low-pressure-fuel-pump-for-mercury-mercruiser-4-3l-5-0l-5-7l-carbureted-engines-8-10-psi-oem-style-fit","title":"FUSCH Electric Low-Pressure Fuel Pump for Mercury Mercruiser 4.3L\/5.0L\/5.7L Carbureted Engines — 8–10 PSI, OEM-Style Fit","description":"\u003cstrong\u003eFUSCH Electric Low Pressure Fuel Pump is a direct replacement fuel pump designed for carbureted Mercury Mercruiser V6 and V8 marine engines, delivering 8–10 PSI for reliable low-pressure fuel delivery.\u003c\/strong\u003e\n\nThis replacement pump is engineered to meet OEM-style fit and function for older Mercruiser carbureted outboards and sterndrives. Built from metal and ABS components and supplied with sealing washers and an electrical connector, it’s intended for owners who need a dependable, budget-friendly swap for worn or leaking low-pressure pumps on 4.3L, 5.0L and 5.7L engines.\n\n\u003ch3\u003eWhich Mercury engines and part numbers does this pump replace?\u003c\/h3\u003e\n\u003cp\u003eThe pump is formulated for specific carbureted Mercury Mercruiser applications and fits common aftermarket and OEM part numbers. It offers a compatible substitute for older low-pressure fuel systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Mercruiser 4.3L (262) 1998, 5.0L (305) 2000, and 5.7L (350) 2000 carbureted engines.\u003c\/li\u003e\n  \u003cli\u003eReplaces part numbers: Mercruiser 861155A3, Mallory 935432, Sierra 18-8868, and 861155A2.\u003c\/li\u003e\n  \u003cli\u003eSuitable for MCM\/MIE 4.3L V6 and 5.0L V8 Gen+ applications and some 350 ci carb setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I know this pump is right for my carbureted engine?\u003c\/h3\u003e\n\u003cp\u003eConfirm compatibility by matching engine type, year, and the original pump’s part number. This unit is for low-pressure, carburetor-fed fuel systems only and differs from fuel-injection pumps in nozzle and mounting details.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks only with carbureted engines—does not fit fuel-injected systems.\u003c\/li\u003e\n  \u003cli\u003ePump outlet small end is threaded; fuel-injection pumps typically are not threaded there.\u003c\/li\u003e\n  \u003cli\u003eProvides approximately 8–10 PSI, appropriate for carburetor float bowls and mechanical fuel regulators.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the build and included accessories?\u003c\/h3\u003e\n\u003cp\u003eThe FUSCH pump uses durable metal and ABS parts and arrives ready to install with common hardware. It’s packaged to simplify replacement and reduce the need for extra parts when swapping out an old pump.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHousing and moving parts made from metal and ABS for corrosion resistance and strength.\u003c\/li\u003e\n  \u003cli\u003eIncludes tight-seal washers and an electrical connector plug for wiring compatibility.\u003c\/li\u003e\n  \u003cli\u003eManufactured to OEM-style dimensions to ease bolt-on installation on approved engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I watch for during installation and use?\u003c\/h3\u003e\n\u003cp\u003eFollow safe marine fuel-handling practices and verify that the fuel system matches low-pressure carburetor requirements. Improper use on fuel-injected engines can cause performance issues or damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not install on fuel-injected engines—this pump lacks injection-compatible fittings and pressure.\n  \u003c\/li\u003e\n  \u003cli\u003eCheck electrical connections, ground, and fuse sizing to protect the pump circuit.\n  \u003c\/li\u003e\n\u003cli\u003eInspect inlet\/outlet fittings and hoses for proper size and secure clamps to prevent leaks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\nThis FUSCH low-pressure electric fuel pump is for boat owners and marine technicians maintaining classic or carbureted Mercruiser engines who need an economical, OEM-compatible replacement. It’s ideal if your engine uses the listed part numbers and requires 8–10 PSI fuel delivery; if your craft has fuel injection or a different pressure spec, choose a pump designed for that system instead.\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this pump be used on fuel-injected Mercury engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This FUSCH pump is a low-pressure 8–10 PSI unit for carbureted engines and is not compatible with fuel-injection systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which part numbers does this replace?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It replaces Mercruiser 861155A3, Mallory 935432, Sierra 18-8868 and 861155A2 for compatible carbureted models.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FUSCH","offers":[{"title":"Default Title","offer_id":48084158152862,"sku":"B0C9LXRPTN","price":73.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/fusch-fuel-pump-front-view.jpg?v=1785847673","url":"https:\/\/northtrailauto.ca\/products\/fusch-electric-low-pressure-fuel-pump-for-mercury-mercruiser-4-3l-5-0l-5-7l-carbureted-engines-8-10-psi-oem-style-fit","provider":"North Trail Auto","version":"1.0","type":"link"}