{"product_id":"volvo-777","title":"Volvo Penta Fuel Pressure Regulator 3858967","description":"\u003ch2\u003eVolvo Penta OEM Fuel Pressure Regulator – Part No. 3858967\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eNote: Volvo Penta’s parts catalog lists this component as “Governor.” Service references and parts-channel data consistently identify its function as the EFI fuel pressure regulator.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3858967\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVolvo Penta Catalog Description\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGovernor\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunctional Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEFI Fuel Pressure Regulator\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEFI Fuel Rail \/ Injector Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRetaining Hardware\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClip 3858968\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelated O-Ring Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3858981 (regulator \/ injector O-rings)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eService Bulletin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVolvo Penta bulletin P-23-7-3 applies to this regulator\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupersedes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo confirmed OEM superseding number — 3858967 is the current active number\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplaced By\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo documented replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eVolvo Penta used different EFI fuel-system components across otherwise similar V6 and V8 engine generations. Confirm the complete engine model, suffix, and serial number before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVolvo Penta 4.3Gi \/ 4.3GXi \/ 4.3OSi\u003c\/li\u003e\n  \u003cli\u003eVolvo Penta 5.0Gi \/ 5.0GXi \/ 5.0OSi (including 5.0GXi-F and 5.0GXi-G)\u003c\/li\u003e\n  \u003cli\u003eVolvo Penta 5.7Gi \/ 5.7GXi \/ 5.7OSi \/ 5.7OSXi (including 5.7GXi-EF, 5.7GXiE-J, 5.7OSi-BF, 5.7OSXi-A)\u003c\/li\u003e\n  \u003cli\u003eVolvo Penta V6-200 \/ V6-225 (selected later configurations)\u003c\/li\u003e\n  \u003cli\u003eVolvo Penta V8-225 \/ V8-270 \/ V8-300 \/ V8-320 \/ V8-380 (selected applications — verify by serial number)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSymptoms of a Failing Fuel Pressure Regulator\u003c\/h3\u003e\n\u003cp\u003eTest fuel rail pressure using the Volvo Penta service procedure before replacing the regulator. Common symptoms of a faulty regulator include:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncorrect fuel rail pressure (high or low)\u003c\/li\u003e\n  \u003cli\u003eHard starting or long crank times\u003c\/li\u003e\n  \u003cli\u003eRich or lean running conditions\u003c\/li\u003e\n  \u003cli\u003eEngine surging at speed or under load\u003c\/li\u003e\n  \u003cli\u003ePoor idle quality\u003c\/li\u003e\n  \u003cli\u003eStalling under load\u003c\/li\u003e\n  \u003cli\u003eFuel-delivery related fault codes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFuel pressure must be relieved before opening the fuel rail.\u003c\/strong\u003e Follow appropriate fuel-system safety precautions and inspect for leaks after reassembly.\u003c\/p\u003e\n\u003cp\u003eDuring replacement, inspect the retaining clip (3858968), fuel rail, regulator sealing surfaces, and O-rings. Replace O-rings if they show any compression, cracking, or swelling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eService Bulletin P-23-7-3:\u003c\/strong\u003e Volvo Penta bulletin P-23-7-3 specifies that the regulator’s internal screen filter should be removed and replaced with \u003ca href=\"\/products\/8131479994404\"\u003eE-clip 21491831\u003c\/a\u003e in applicable installations. Review this bulletin when servicing 3858967.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/8131479994404\"\u003eVolvo Penta Clip 21491831\u003c\/a\u003e — service bulletin P-23-7-3 replacement clip\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does Volvo Penta call this a “Governor”?\u003c\/strong\u003e\u003cbr\u003eThe Volvo Penta parts catalog uses “Governor” as the listed description for 3858967, but service references, bulletin P-23-7-3, and parts-channel data consistently identify its function as the EFI fuel pressure regulator. Both terms refer to the same part — use 3858967 as the ordering number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to replace the O-rings at the same time?\u003c\/strong\u003e\u003cbr\u003eYes, in most cases. The regulator O-ring set (3858981) seals the regulator to the fuel rail and the injector ports. Replacing the O-rings whenever the fuel rail is opened is standard practice and prevents fuel leaks after reassembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does service bulletin P-23-7-3 involve?\u003c\/strong\u003e\u003cbr\u003eBulletin P-23-7-3 instructs technicians to remove the regulator’s internal screen filter and install \u003ca href=\"\/products\/8131479994404\"\u003eE-clip 21491831\u003c\/a\u003e in its place on applicable installations. This update should be completed when the regulator is serviced.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I confirm fitment even if my engine displacement matches?\u003c\/strong\u003e\u003cbr\u003eYes. Volvo Penta used different EFI fuel-system components across V6 and V8 production runs of otherwise similar engines. The full engine model suffix and serial number are the reliable fitment references — displacement alone is not sufficient.\u003c\/p\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe “Governor” catalog name causes regular confusion — customers and technicians searching for a fuel pressure regulator won’t recognize it by that name. This part comes up most during EFI drivability complaints: hard starting, surging, and fuel pressure test failures are the most common reasons it’s ordered. Pairing the regulator with the O-ring set (3858981) and the service bulletin E-clip (21491831) on the same order covers a complete regulator service and avoids a return visit for a fuel leak.\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43564033146916,"sku":"3858967","price":328.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/44a078ad-b26b-4536-9cdb-9292b7250339.png?v=1788655854","url":"https:\/\/marisolmarine.com\/products\/volvo-777","provider":"Marisol Marine Company","version":"1.0","type":"link"}