{"product_id":"high-output-alternator-for-dodge-durango-2004-2006-3-7l-4-7l","title":"High Output Alternator for Dodge Durango (2004-2006) 3.7L 4.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Amp Heavy-Duty Alternator for 2004-2006 Dodge Durango (HB)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 250-amp high output alternator replaces the factory charging unit on 2004-2006 Dodge Durango models to stabilize DC system voltage under heavy electrical loads and eliminate severe voltage drops at idle.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Dodge Durango Charging System Limitations\u003c\/h3\u003e\n\u003cp\u003eFactory \u003cstrong\u003eHB\u003c\/strong\u003e platform charging systems are equipped with standard 136A to 160A units engineered purely for base factory accessory loads. When secondary electronics—such as off-road auxiliary lighting, electric winches, plows, or high-RMS aftermarket audio systems—are introduced, the stock unit suffers from severe thermal saturation. Continuous operation near maximum amperage capacity degrades the factory internal diode rectifier, causing high thermal resistance, rotor slip-ring pitting, and parasitic voltage sag down into the sub-12.5V range during curb-idle conditions.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed in the USA, this 250-amp unit resolves current starvation by utilizing heavy-gauge precision-wound copper stators and a reinforced high-temperature rectifier pack. Heavy-duty avalanche diodes prevent thermal breakdown under sustained charging duty cycles, while precision-balanced rotors and low-friction, high-RPM bearings reduce rotational resistance and mechanical whine. Designed to mount directly to factory \u003cstrong\u003ePowerTech 3.7L\u003c\/strong\u003e and \u003cstrong\u003ePowerTech 4.7L\u003c\/strong\u003e brackets without fabrication, it maximizes low-RPM idle amperage output while maintaining clean voltage regulation.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 250-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;\"\u003e2004-2006 Dodge Durango\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;\"\u003ePowerTech 3.7L (EKG) \/ PowerTech 4.7L (EVA) \/ HB\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;\"\u003e210-235 hp \/ 235-300 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;\"\u003e56029700AA, 56029700AC, 421000-0100, 421000-0103, 210-0485, 13912N, 13912, 13912-250A\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\u003e2004-2006 Dodge Durango 3.7L V6\u003c\/li\u003e\n  \u003cli\u003e2004-2006 Dodge Durango 4.7L 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 HB Durango?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2004-2006 Dodge Durango equipped with the \u003cstrong\u003ePowerTech 3.7L\u003c\/strong\u003e or \u003cstrong\u003ePowerTech 4.7L\u003c\/strong\u003e engine. \u003cstrong\u003eThis unit does not fit 5.7L HEMI V8 configurations due to alternate accessory bracket spacing and pulley alignment.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade the primary charging wire?\u003c\/h4\u003e\n\u003cp\u003eYes, running an upgraded 0-gauge or 4-gauge B+ charge wire and engine-to-chassis grounds (Big 3 upgrade) is strongly recommended to handle 250A current loads safely without resistive heat build-up.\u003c\/p\u003e\n\n\u003ch3\u003eThe Dodge Truck Standard\u003c\/h3\u003e\n\u003cp\u003eDurango trucks tasked with heavy towing, recovery duties, or prolonged payload hauling require uncompromised charging stability. This direct-replacement 250A unit provides rock-solid line voltage to keep critical ignition systems, cooling fans, and trail accessories functioning at maximum efficiency under load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565900660984,"sku":"DS-EM9J0Q3BK","price":249.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-dodge-durango-2004-2006-3-7l-4-7l-1.jpg?v=1791078542","url":"https:\/\/performancechiptuning.com\/es\/products\/high-output-alternator-for-dodge-durango-2004-2006-3-7l-4-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}