{"product_id":"marine-alternator-12v-65a-replaces-mercruiser-805447t","title":"Marine Alternator 12V 65A – Replaces MerCruiser 805447T | SKU 57-60065","description":"\u003cp\u003eA direct-fit aftermarket replacement alternator for MerCruiser sterndrive and inboard engines requiring the 65-amp output unit. This 12-volt, 65-amp alternator replaces MerCruiser OEM part number 805447T and installs with no wiring modifications — the internal voltage regulator, single groove pulley, and 2-inch mounting foot match the original configuration. The 65A output gives this unit 10 more amps than the standard 55A replacement, making it better suited to vessels with higher house loads from electronics, refrigeration, or live well systems.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMerCruiser 5.0L (305 CID) V8 sterndrive engines equipped with single groove belt drive\u003c\/li\u003e\n  \u003cli\u003eMerCruiser 5.7L (350 CID) V8 sterndrive engines equipped with single groove belt drive\u003c\/li\u003e\n  \u003cli\u003eMerCruiser 7.4L (454 CID) V8 sterndrive engines\u003c\/li\u003e\n  \u003cli\u003eMerCruiser 8.2L (502 CID) V8 sterndrive engines\u003c\/li\u003e\n  \u003cli\u003eMerCruiser inboard engines using the Delco CS-series alternator with single V-belt configuration\u003c\/li\u003e\n  \u003cli\u003eVerify fitment against your engine serial number and parts diagram before ordering — pulley groove count and mounting foot dimensions must match\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eReplaces\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMerCruiser OEM:\u003c\/strong\u003e 805447T\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 57-60065\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 65 Amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRegulator:\u003c\/strong\u003e Internal voltage regulator\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePulley:\u003c\/strong\u003e Single groove (included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Foot:\u003c\/strong\u003e 2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Aftermarket direct replacement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/marine-alternator-12v-55a-replaces-mercruiser-817119a1\"\u003eMarine Alternator 12V 55A – Replaces MerCruiser 817119A1 (57-60050)\u003c\/a\u003e — lower output option for standard loads\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/quicksilver-70-amp-alternator-delco-serpentine-862031t1\"\u003eQuicksilver 70 Amp Alternator – Delco Serpentine – 862031T1\u003c\/a\u003e — for serpentine belt systems\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/mercury-mercruiser-quicksilver-serpentine-belt-865615q04\"\u003eMercury MerCruiser Quicksilver Serpentine Belt 865615Q04\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/sierra-v-belt-47-15410-marine-inboard-sterndrive\"\u003eSierra V-Belt 47-15410 – Marine Inboard Sterndrive\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/sierra-v-belt-47-15460-marine-inboard-sterndrive\"\u003eSierra V-Belt 47-15460 – Marine Inboard Sterndrive\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003eThe 65-amp unit is the better choice over the \u003ca href=\"\/products\/marine-alternator-12v-55a-replaces-mercruiser-817119a1\"\u003e55-amp replacement\u003c\/a\u003e when your vessel is running higher sustained electrical loads — chartplotters, VHF, AIS, live wells, bilge systems, or a 12V refrigeration unit all add up quickly, and the extra 10 amps gives your charging system more headroom, especially at low RPM in no-wake zones or while trolling. Both units share the same mounting configuration, so the decision is purely about output. As with the 55A unit, confirm your belt type before ordering: this is a single groove (V-belt) alternator. If your engine has a multi-groove serpentine belt, the \u003ca href=\"\/products\/quicksilver-70-amp-alternator-delco-serpentine-862031t1\"\u003eQuicksilver 862031T1 serpentine alternator\u003c\/a\u003e is the correct choice. Also inspect your drive belt at the time of alternator replacement — a worn or cracked belt on a new alternator is a common cause of premature bearing wear and charging faults.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":50992569581604,"sku":"57-60065","price":431.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/57-60065_50760def-df1a-4844-a36f-cedfe2231dab.jpg?v=1782713945","url":"https:\/\/marisolmarine.com\/products\/marine-alternator-12v-65a-replaces-mercruiser-805447t","provider":"Marisol Marine Company","version":"1.0","type":"link"}