{"product_id":"unk-electric-low-pressure-fuel-pump-for-carbureted-volvo-penta-4-3-5-0-5-7-fits-3858261-3850809-3854620-3857986","title":"UNK Electric Low-Pressure Fuel Pump for Carbureted Volvo Penta 4.3\/5.0\/5.7 – Fits 3858261 3850809 3854620 3857986","description":"\u003cp\u003e\u003cstrong\u003eReplacement electric low-pressure marine fuel pump designed to fit carburated Volvo Penta V6 and V8 engines using part numbers 3858261, 3850809, 3854620, 3857986 and Mercruiser 805656A2.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you maintain an older marine engine based on GM or Ford architecture, finding a correct low-pressure fuel pump that matches the stamped part number matters. This UNK electric fuel pump is built to be compatible with a range of Volvo Penta, OMC and Mercruiser part numbers and fits many carburated 4.3, 5.0 and 5.7 V6 and V8 applications from the early 1990s onward. It is a direct replacement option intended for low-pressure fuel systems—verify your old pump's number before ordering to ensure compatibility.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know this pump fits my engine?\u003c\/h3\u003e\n\u003cp\u003eConfirm fitment by comparing the part number on your existing pump to the list of compatible numbers supplied here. This unit matches common Volvo Penta and Mercruiser references used on carburated V6 and V8 marine engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible Volvo part numbers: 3858261, 3854620, 3850809, 3857986 (and earlier 986865 series).\u003c\/li\u003e\n  \u003cli\u003eAlso fits Mercruiser part 805656A2 and many OMC listings.\u003c\/li\u003e\n  \u003cli\u003eDesigned for carburated, low-pressure systems on 4.3, 5.0, 5.7 engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance can I expect from this low-pressure pump?\u003c\/h3\u003e\n\u003cp\u003eThis pump supplies the steady, low-pressure fuel flow required by carburated marine engines and distributors. It is not intended for high-pressure EFI systems; using it in the wrong application can cause poor performance or damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered for consistent low-pressure delivery suitable for carbureted setups.\u003c\/li\u003e\n  \u003cli\u003eElectrical connection and mounting designed to match original equipment form factor.\u003c\/li\u003e\n  \u003cli\u003eIntended as a replacement, not an upgrade to fuel injection systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before installing the replacement pump?\u003c\/h3\u003e\n\u003cp\u003eBefore fitting the new pump, inspect hoses, clamps and electrical connectors to confirm they are sound and corrosion-free. Proper grounding, secure wiring, and leak-free fuel lines are essential for safe operation on marine engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the stamped part number on your old pump matches one of the listed compatible numbers.\u003c\/li\u003e\n  \u003cli\u003eReplace brittle or cracked fuel hoses and corroded clamps when present.\u003c\/li\u003e\n  \u003cli\u003eEnsure correct polarity on the pump’s electrical connector and a clean ground.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long will this pump last and how do I maintain it?\u003c\/h3\u003e\n\u003cp\u003eService life depends on operating conditions, fuel quality and routine maintenance. Regular visual checks, keeping the fuel clean, and replacing damaged lines will help prolong service life and reduce the chance of failure while underway.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInspect pump and connections annually or after extended storage.\u003c\/li\u003e\n  \u003cli\u003eUse clean, stabilized fuel and a good in-line filter to protect the pump.\u003c\/li\u003e\n  \u003cli\u003eReplace unit at the first sign of inconsistent flow, noise or leaks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This UNK replacement electric fuel pump is aimed at boat owners, marine mechanics and restoration projects working with carburated Volvo Penta, OMC or Mercruiser V6 and V8 engines—particularly 4.3, 5.0 and 5.7 liter models from the early 1990s and newer. Choose this pump if you need a direct-fit, low-pressure replacement that matches the listed part numbers; if your engine uses electronic fuel injection, select a pump specified for high-pressure EFI systems instead.\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: Is this pump compatible with Volvo Penta 3858261?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This UNK pump is compatible with Volvo Penta 3858261 and several related part numbers listed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this pump on fuel-injected engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This is a low-pressure pump intended for carburated engines, not high-pressure EFI systems.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"UNK","offers":[{"title":"Default Title","offer_id":48082959040670,"sku":"B07K38B1SK","price":64.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/unk-front-view-fuel-pump.jpg?v=1785820454","url":"https:\/\/northtrailauto.ca\/products\/unk-electric-low-pressure-fuel-pump-for-carbureted-volvo-penta-4-3-5-0-5-7-fits-3858261-3850809-3854620-3857986","provider":"North Trail Auto","version":"1.0","type":"link"}