{"product_id":"high-output-alternator-for-gmc-sierra-2006-2007-6-6l","title":"High Output Alternator for GMC Sierra (2006-2007) 6.6L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty 300-Amp High Output Alternator for 2006-2007 GMC Sierra (GMT800)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 300-Amp High Output Alternator replaces the low-output factory charging unit on the 2006-2007 GMC Sierra to deliver reliable, high-amperage current for dual battery setups, winches, plows, and commercial towing equipment without electrical system voltage sag.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Sierra Charging Weakness\u003c\/h3\u003e\n\u003cp\u003eFactory \u003cstrong\u003eGMT800\u003c\/strong\u003e trucks equipped with the \u003cstrong\u003e6.6L Duramax (LBZ)\u003c\/strong\u003e typically rolled off the assembly line with 105-amp or 145-amp units. In diesel applications with high-draw glow plug cycles, dual battery banks, and aftermarket accessories like onboard air or heavy trailer lighting, the stock stator coils overheat rapidly. Under sustained high-load conditions, internal diodes suffer severe thermal degradation, resulting in extreme voltage drops below 12.2V, flickering instrument clusters, and accelerated battery failure.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis Made in USA 300-amp unit provides a massive reserve capacity over stock. Featuring high-grade copper windings, heavy-duty avalanche diode rectifiers, and an internal bridge rectifier engineered to disperse heat under continuous load, this unit eliminates thermal heat-soak failure. It bolts directly to the factory \u003cstrong\u003e6.6L Duramax\u003c\/strong\u003e accessory drive bracket, utilizing standard pulley ratios to maintain exceptional charge rates at idle while handling sustained peak amperage outputs under heavy load.\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: solid font-size: min-width:\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;\"\u003e\n\u003cstrong\u003e6.6L Duramax (LBZ\/LMM)\u003c\/strong\u003e \/ \u003cstrong\u003eGMT800\u003c\/strong\u003e\n\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;\"\u003e360 hp \/ 650 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;\"\u003e\n\u003cstrong\u003e0124325134\u003c\/strong\u003e, \u003cstrong\u003e15222341\u003c\/strong\u003e, \u003cstrong\u003e0124325214\u003c\/strong\u003e, \u003cstrong\u003e21998419\u003c\/strong\u003e, \u003cstrong\u003e15219565\u003c\/strong\u003e, \u003cstrong\u003e0124325133\u003c\/strong\u003e, \u003cstrong\u003e0124325154\u003c\/strong\u003e, \u003cstrong\u003e15200267\u003c\/strong\u003e, \u003cstrong\u003e0124325121\u003c\/strong\u003e, \u003cstrong\u003e0124325153\u003c\/strong\u003e, \u003cstrong\u003e15222342\u003c\/strong\u003e, \u003cstrong\u003e0124325164\u003c\/strong\u003e, \u003cstrong\u003e94665137\u003c\/strong\u003e, \u003cstrong\u003eAL8789X\u003c\/strong\u003e, \u003cstrong\u003e11348\u003c\/strong\u003e, \u003cstrong\u003e11348N\u003c\/strong\u003e, \u003cstrong\u003e11348-300A\u003c\/strong\u003e\n\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\u003e2006-2007 GMC Sierra 2500 HD 6.6L V8 Turbo Diesel\u003c\/li\u003e\n  \u003cli\u003e2006-2007 GMC Sierra 3500 \/ 3500 HD 6.6L V8 Turbo Diesel\u003c\/li\u003e\n  \u003cli\u003e2007 GMC Sierra 2500 HD \/ 3500 HD Classic 6.6L V8 Turbo Diesel\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 fit for the 2006-2007 GMC Sierra equipped with the \u003cstrong\u003e6.6L Duramax\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade my main power cabling?\u003c\/h4\u003e\n\u003cp\u003eWhile this alternator features a direct-fit bolt pattern and OEM plug configuration, installing a 1\/0 AWG Big 3 wiring upgrade is highly recommended to safely handle continuous 300-amp current flow to the battery.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt for severe-duty hauling, heavy payload demands, and extreme commercial duty, this alternator ensures uninterrupted power to vital vehicle sensors, glow plugs, and trailer electronics under the toughest trailering conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565766115576,"sku":"DS-E80BY7GLF","price":350.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-gmc-sierra-2006-2007-6-6l-1.jpg?v=1791074182","url":"https:\/\/performancechiptuning.com\/de\/products\/high-output-alternator-for-gmc-sierra-2006-2007-6-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}