{"product_id":"high-output-alternator-for-chevrolet-avalanche-2005-2006-8-1l","title":"High Output Alternator for Chevrolet Avalanche (2005-2006) 8.1L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Amp Charging Output Alternator for 2005-2006 Chevrolet Avalanche (GMT805)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 250-Amp High Output Alternator replaces the low-output factory charging unit on the 2005-2006 Chevrolet Avalanche 8.1L to deliver consistent 14.4-volt power and eliminate voltage sag under heavy auxiliary and towing loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Avalanche Charging Limitations\u003c\/h3\u003e\n\u003cp\u003eThe factory Delphi 105A or 145A units equipped on the heavy-duty \u003cstrong\u003eGMT805\u003c\/strong\u003e chassis cannot maintain system voltage when operating high-draw accessories, plows, winches, or onboard electronics. In the confined engine bay of the big-block \u003cstrong\u003eVortec 8100 L18\u003c\/strong\u003e, continuous electrical demand induces severe thermal stress, leading to premature diode breakdown in the OEM rectifier, brush wear, and intermittent battery drain at curb idle.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered and manufactured in the USA, this direct-mount 250-amp alternator utilizes high-efficiency heavy-gauge copper windings and high-temperature insulation to prevent heat soak failure. A heavy-duty internal rectifier paired with an advanced voltage regulator delivers elevated amperage even below 1,000 RPM engine speed. It directly mounts to factory brackets and interchanges with OEM part numbers \u003cstrong\u003e10464405\u003c\/strong\u003e, \u003cstrong\u003e15263859\u003c\/strong\u003e, and \u003cstrong\u003e19244751\u003c\/strong\u003e without requiring bracket alterations.\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;\"\u003e2005-2006 Chevrolet Avalanche\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;\"\u003eVortec 8100 L18 8.1L V8 \/ GMT805\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;\"\u003e320 hp \/ 440 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;\"\u003e10464405, 10464443, 10464453, 10464456, 10464476, 15263859, 19151921, 19244751, 8104644760, 8152260, 8292-250A\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\u003e2005 Chevrolet Avalanche 2500 (8.1L V8 L18)\u003c\/li\u003e\n  \u003cli\u003e2006 Chevrolet Avalanche 2500 (8.1L V8 L18)\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 GMT805 Avalanche?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct bolt-on fit for the 2005-2006 Chevrolet Avalanche 2500 equipped with the \u003cstrong\u003eVortec 8100 L18\u003c\/strong\u003e 8.1L big block; it does not fit 1500 models equipped with 5.3L small blocks.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade the primary charging wire?\u003c\/h4\u003e\n\u003cp\u003eWe strongly recommend performing a \"Big 3\" electrical upgrade using 1\/0 or 2-gauge positive and ground wiring to safely support continuous 250-amp flow without thermal resistance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eBig-block Avalanche platforms require continuous, stable DC voltage to handle high-payload trailering, auxiliary cooling, and demanding fleet service without ignition or sensor interference.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565630095608,"sku":"DS-E91OI3XU9","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-chevrolet-avalanche-2005-2006-8-1l-1.jpg?v=1791070583","url":"https:\/\/performancechiptuning.com\/fr\/products\/high-output-alternator-for-chevrolet-avalanche-2005-2006-8-1l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}