{"product_id":"high-output-alternator-for-gmc-sierra-2006-2007-8-1l","title":"High Output Alternator for GMC Sierra (2006-2007) 8.1L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Output 250-Amp Alternator for 2006-2007 GMC Sierra (GMT800)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The High Output 250-Amp Alternator replaces the factory low-amperage charging unit on the 2006-2007 GMC Sierra 8.1L to deliver consistent electrical current under heavy auxiliary electrical loads and eliminate system voltage drops.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Sierra Alternator Weakness\u003c\/h3\u003e\n\u003cp\u003eFactory-equipped Delco charging systems on the heavy-duty \u003cstrong\u003eGMT800\u003c\/strong\u003e trucks were engineered for baseline electronics, typically outputting a modest 105 or 145 amps. When supporting commercial snow plows, heavy-duty winches, auxiliary work lighting, or high-draw trailer brake controllers, the OEM alternator operates near continuous saturation. Under sustained operating temperatures, stock diode bridges suffer thermal degradation, reducing low-RPM rectifier output. This creates chronic voltage sag below 12.6 volts at hot idle, causing PCM sensor drift, sluggish throttle actuator response, and premature battery degradation on the \u003cstrong\u003eVortec 8100 L18\u003c\/strong\u003e big-block platform.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered for severe duty cycles, this 250-amp upgrade features heavy-gauge pure copper windings, a dynamically balanced high-performance rotor, and oversized press-fit avalanche diodes to dissipate thermal load efficiently. The rigid cast aluminum housing utilizes factory bolt patterns for a hassle-free drop-in installation without relocation brackets. Direct interchange compatibility replaces OEM part numbers \u003cstrong\u003e10464405\u003c\/strong\u003e, \u003cstrong\u003e10464443\u003c\/strong\u003e, \u003cstrong\u003e10464453\u003c\/strong\u003e, \u003cstrong\u003e10464456\u003c\/strong\u003e, \u003cstrong\u003e10464476\u003c\/strong\u003e, \u003cstrong\u003e15263859\u003c\/strong\u003e, \u003cstrong\u003e19151921\u003c\/strong\u003e, \u003cstrong\u003e19244751\u003c\/strong\u003e, \u003cstrong\u003e8104644760\u003c\/strong\u003e, \u003cstrong\u003e8152260\u003c\/strong\u003e, and \u003cstrong\u003e8292-250A\u003c\/strong\u003e, maintaining a stable 14.4-volt charge across the entire RPM range.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x High Output 250-Amp 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;\"\u003e2006-2007 GMC Sierra\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) \/ GMT800\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;\"\u003e330 hp \/ 450 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\u003e2006 GMC Sierra 2500 HD 8.1L V8\u003c\/li\u003e\n  \u003cli\u003e2006 GMC Sierra 3500 8.1L V8\u003c\/li\u003e\n  \u003cli\u003e2007 GMC Sierra 2500 HD Classic 8.1L V8\u003c\/li\u003e\n  \u003cli\u003e2007 GMC Sierra 3500 Classic 8.1L 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 GMT800 Sierra?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct bolt-on fit for the 2006-2007 GMC Sierra equipped with the \u003cstrong\u003eVortec 8100 L18\u003c\/strong\u003e 8.1L big block V8 engine.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade my factory alternator wiring?\u003c\/h4\u003e\n\u003cp\u003eUpgrading the primary B+ charging lead to 0-gauge or 4-gauge wire with an inline fuse (Big 3 upgrade) is highly recommended to safely support full 250-amp continuous transmission without line resistance.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to match the severe towing and hauling capability of commercial-grade Sierra platforms, this alternator delivers stable, uninterruptible electrical power in extreme working environments.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565637697784,"sku":"DS-E9TZBKGE2","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-gmc-sierra-2006-2007-8-1l-1.jpg?v=1791070847","url":"https:\/\/performancechiptuning.com\/de\/products\/high-output-alternator-for-gmc-sierra-2006-2007-8-1l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}