{"product_id":"fusch-electric-low-pressure-marine-fuel-pump-for-mercury-mercruiser-4-3l-5-0l-5-7l-8-10-psi-direct-fit-replacement","title":"FUSCH Electric Low-Pressure Marine Fuel Pump for Mercury Mercruiser 4.3L\/5.0L\/5.7L – 8–10 PSI, direct-fit replacement","description":"\u003cb\u003eFUSCH Electric Low Pressure Fuel Pump is a direct-fit replacement for carbureted Mercury\/Mercruiser 4.3L, 5.0L and 5.7L V6\/V8 boat engines, delivering reliable 8–10 PSI fuel flow for marine carburetors.\u003c\/b\u003e\n\n\u003cp\u003eThis precision-built pump is designed for owners and technicians who need a dependable, OEM-standard replacement for older boat fuel pumps. Constructed from metal and ABS components and produced to match original equipment specifications, the unit replaces part numbers such as Mercruiser 861155A3, Mallory 935432, and Sierra 18-8868. It arrives with sealing washers and an electrical connector plug so you can reinstall it with minimal fuss.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know this pump fits my Mercury\/Mercruiser carbureted engine?\u003c\/h3\u003e\n\u003cp\u003eCompatibility centers on carbureted engine models and years. This pump fits Mercruiser MCM\/MIE 4.3L V6 and 5.0L V8 Gen+ applications and many 5.7L (350 ci) carbureted engines from typical model years listed by OEM references.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces OEM numbers 861155A3, 861155A2, Mallory 935432 and Sierra 18-8868.\u003c\/li\u003e\n  \u003cli\u003eCommonly used on 4.3L 262 (1998), 5.0L 305 (2000), 5.7L 350 (2000) carbureted engines.\u003c\/li\u003e\n  \u003cli\u003eChecks: threaded small end and carburetor-based fuel system required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat fuel pressure and engine types is this pump designed for?\u003c\/h3\u003e\n\u003cp\u003eThis is a low pressure electric pump engineered to supply approximately 8–10 PSI, which matches the pressure needs of most marine carburetors. It is not suitable for fuel-injected systems, which require higher pressure and a different pump design.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated output: low pressure, about 8–10 PSI for carburetors.\u003c\/li\u003e\n  \u003cli\u003eNot compatible with fuel-injected engines or high-pressure systems.\u003c\/li\u003e\n  \u003cli\u003eSmall threaded inlet\/outlet — a visual check distinguishes it from injection pumps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials, build quality, and accessories are included?\u003c\/h3\u003e\n\u003cp\u003eThe pump housing combines metal and durable ABS components to meet OEM-style standards for corrosion resistance and mechanical stability in marine environments. Each unit ships with the necessary small parts to simplify installation and ensure a tight seal at fittings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConstruction: metal plus ABS for durability and marine resistance.\u003c\/li\u003e\n  \u003cli\u003eManufactured to OEM tolerances for direct-fit replacement.\u003c\/li\u003e\n  \u003cli\u003ePackage includes tight-seal washers and an electrical connector plug.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and verify correct operation?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone familiar with marine fuel systems: mount the pump using existing bolt points, connect the electrical plug and hoses, and check for leaks. After installation, confirm fuel pressure at the carburetor and inspect all seals while running the engine briefly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMount to original bracket or compatible retrofit location.\u003c\/li\u003e\n  \u003cli\u003eUse provided washers and the connector plug for a secure electrical and fuel seal.\u003c\/li\u003e\n  \u003cli\u003eVerify ~8–10 PSI at carburetor and check for leaks before full operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: boat owners, marine mechanics, and restoration shops maintaining older Mercury\/Mercruiser V6 and V8 carbureted engines that require a reliable low pressure electric fuel pump. If your vessel uses a carburetor and your current pump shows wear, leaks, weak flow, or matches the replaced OEM numbers, this FUSCH unit provides a practical, OEM-grade replacement. Do not buy this pump for fuel-injected engines; choose a high-pressure injection pump for those applications.\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 pump work on fuel-injected Mercury engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This FUSCH pump is low-pressure (8–10 PSI) 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 OEM part numbers does this replace?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It replaces Mercruiser 861155A3\/861155A2, Mallory 935432, and Sierra 18-8868.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FUSCH","offers":[{"title":"Default Title","offer_id":67586523431097,"sku":"B0C9LXRPTN","price":117.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/fusch-front-view-pump.jpg?v=1790485639","url":"https:\/\/redleafauto.ca\/products\/fusch-electric-low-pressure-marine-fuel-pump-for-mercury-mercruiser-4-3l-5-0l-5-7l-8-10-psi-direct-fit-replacement","provider":"Redleaf Auto","version":"1.0","type":"link"}