{"product_id":"yeoflagtrade-mercury-fuel-pump-replacement-861155a3-low-pressure-for-4-3l-5-0l-5-7l-carbureted-engines-dual-line","title":"Yeoflagtrade Mercury Fuel Pump Replacement 861155A3 Low-Pressure for 4.3L\/5.0L\/5.7L Carbureted Engines Dual-Line","description":"\u003cp\u003e\u003cstrong\u003eYeoflagtrade 861155A3 is a low-pressure electric replacement fuel pump engineered to fit Mercury\/MerCruiser 4.3L, 5.0L and 5.7L carbureted marine V6 and V8 engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement pump is built to restore consistent fuel delivery to older marine engines that use a low-pressure carbureted fuel system. It replaces common OE part numbers including 861155A3, 861155-2, 935432 and 18-8868, offering a direct-fit option for many late‑1990s and early‑2000s Mercury Marine applications. The unit’s dual-line layout and durable construction make it a practical service part for inboard\/outboard and sterndrive vessels where reliable fuel flow is needed for starting and cruising.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Mercury engines will this pump work with?\u003c\/h3\u003e\n\u003cp\u003eThis pump is intended for carbureted Mercury MerCruiser engines, primarily from the late 1990s and 2000s. Typical fits include 4.3L V6 (262 ci) and larger 5.0L and 5.7L V8 (305\/350 ci) models that used a low-pressure fuel pump configuration from the factory.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with 4.3L V6, 5.0L V8 and 5.7L V8 carburetor engines.\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for OE numbers 861155A3, 861155-2, 935432 and 18-8868.\u003c\/li\u003e\n  \u003cli\u003eDesigned for MCM\/MIE Gen+ and many 350 ci carbureted applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this pump help with starting and running reliability?\u003c\/h3\u003e\n\u003cp\u003eThe pump restores steady low-pressure fuel flow to the carburetor, which reduces hard starts and erratic idling caused by weak or failing pumps. Improved delivery helps stabilize engine performance during warm-up and under light to moderate loads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDual-line design mimics factory transfer-style flow for consistent fuel supply.\u003c\/li\u003e\n  \u003cli\u003eReplaces worn pumps that cause vapor lock or slow starts.\u003c\/li\u003e\n  \u003cli\u003eEngineered for long service life to minimize repeat replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before ordering to ensure correct fit?\u003c\/h3\u003e\n\u003cp\u003eConfirm model year, engine displacement, and whether your engine uses a carburetor with a low‑pressure pump. Compare your current pump’s part number with the interchange list and inspect mounting and electrical connector styles to verify compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatch original part numbers: 861155A3, 861155-2, 935432, 18-8868.\u003c\/li\u003e\n  \u003cli\u003eVerify engine type: carbureted 4.3L V6, 5.0L\/5.7L V8 models.\u003c\/li\u003e\n  \u003cli\u003eCheck physical mount, inlet\/outlet hose sizes, and electrical connector shape.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the design and durability highlights?\u003c\/h3\u003e\n\u003cp\u003eThe unit is built with robust materials and tested to provide extended service life under marine conditions. Its construction focuses on resisting the vibration and corrosion common in boating environments and sustaining thousands of hours of operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDurable engineering targeted for long operational life.\u003c\/li\u003e\n  \u003cli\u003eCorrosion- and vibration-resistant build suitable for marine use.\u003c\/li\u003e\n  \u003cli\u003eDual-line layout and transfer-style configuration for reliable flow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: boat owners, mariners, and marine technicians seeking a cost-effective, direct-replacement fuel pump for older Mercury MerCruiser carbureted engines. It’s a practical choice for those maintaining 4.3L V6 and 5.0L\/5.7L V8 boats who need to restore dependable low-pressure fuel delivery without altering the original fuel system. Always confirm fitment with your engine’s model year and part number list before purchase.\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: Does this pump fit a 2000 Mercury 5.0L carb engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it lists compatibility with 5.0L (305) carbureted Mercury engines; confirm your engine uses a low-pressure factory pump and match part numbers first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I swap this into an electronic fuel injection system?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — this is a low-pressure pump intended for carbureted systems, not EFI applications that require higher-pressure pumps.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Yeoflagtrade","offers":[{"title":"Default Title","offer_id":67586690023609,"sku":"B0CGLTW5SG","price":117.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/yeoflagtrade-front-view-fuel-pump.jpg?v=1790490071","url":"https:\/\/redleafauto.ca\/products\/yeoflagtrade-mercury-fuel-pump-replacement-861155a3-low-pressure-for-4-3l-5-0l-5-7l-carbureted-engines-dual-line","provider":"Redleaf Auto","version":"1.0","type":"link"}