{"product_id":"high-output-alternator-for-ford-expedition-1997-2002-4-6l-5-4l","title":"High Output Alternator for Ford Expedition (1997-2002) 4.6L 5.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Output 300A Alternator for 1997-2002 Ford Expedition (UN93)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 300A high-output alternator replaces the factory charging unit on the 1997-2002 Ford Expedition to stabilize system voltage and supply continuous high-amperage electrical current for auxiliary loads, audio setups, and demanding work gear.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Expedition Charging Limitations\u003c\/h3\u003e\n\u003cp\u003eFactory Ford alternators on the first-generation \u003cstrong\u003eUN93\u003c\/strong\u003e platform produce between 95 and 130 amps, which quickly proves inadequate when running aftermarket winches, snow plows, heavy lighting, or high-draw inverters. Under sustained load, factory units—specifically OEM reference \u003cstrong\u003eF75U10300CA\u003c\/strong\u003e—encounter thermal saturation. This causes severe diode breakdown, resulting in voltage drops below 12.6V at curb idle, light flicker, and severe battery drainage.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eBuilt in the USA, this 300-amp unit utilizes heavy-duty stator windings and oversized internal rectifier diodes designed to handle elevated underhood operating temperatures without thermal throttling. Delivering roughly 160-180 amps at idle and a full 300 amps at operational RPM, the unit features a precision-machined housing that bolts directly to factory \u003cstrong\u003eModular 4.6L\u003c\/strong\u003e and \u003cstrong\u003e5.4L Triton\u003c\/strong\u003e engine accessory brackets using existing belt routing.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x 300 Amp High Output Alternator\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e1997-2002 Ford Expedition\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eModular V8 (4.6L \/ 5.4L) \/ UN93\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e215-260 hp \/ 290-350 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e7791, 334-2274, AL7547X, 7791N, 210-5202, F75U10300CA, F75U10300CB, F7PU10346KA, 7791-300A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1997-2002 Ford Expedition 4.6L V8\u003c\/li\u003e\n  \u003cli\u003e1997-2002 Ford Expedition 5.4L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the UN93 Expedition?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct bolt-on fit for the 1997-2002 Ford Expedition equipped with either the \u003cstrong\u003eModular 4.6L\u003c\/strong\u003e or \u003cstrong\u003e5.4L Triton V8\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade my main battery wiring?\u003c\/h4\u003e\n\u003cp\u003eYes, executing a \"Big 3\" electrical upgrade using 1\/0 or 4-gauge oxygen-free copper power and ground cables is strongly recommended to safely carry 300 amps and eliminate fire risks or line resistance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Utility Durability Standard\u003c\/h3\u003e\n\u003cp\u003eConstructed specifically for heavy-duty tow rigs, overland builds, and commercial fleet use, this alternator ensures consistent 14.4-volt delivery to keep your battery bank charged and high-draw electronics running reliably under severe duty cycles.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565769163000,"sku":"DS-EG74JVNAX","price":290.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-ford-expedition-1997-2002-4-6l-5-4l-1.jpg?v=1791074357","url":"https:\/\/performancechiptuning.com\/products\/high-output-alternator-for-ford-expedition-1997-2002-4-6l-5-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}