{"product_id":"high-output-alternator-for-gmc-yukon-2007-2009-4-8l","title":"High Output Alternator for GMC Yukon (2007-2009) 4.8L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Output 300A Alternator for 2007-2009 GMC Yukon (GMT900)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 300 Amp High Output Alternator replaces the lower-capacity factory charging unit on the 2007-2009 GMC Yukon to maintain continuous, stable system voltage under severe electrical demands and heavy auxiliary loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Yukon Charging Limitation\u003c\/h3\u003e\n\u003cp\u003eFactory alternators on the \u003cstrong\u003eGMT900\u003c\/strong\u003e platform typically deliver between 145 and 160 amps, which quickly proves insufficient when powering aftermarket accessories like high-draw winches, auxiliary off-road lighting, commercial inverters, or custom audio systems. Under demanding electrical loads or prolonged hot idle, the OEM unit suffers from severe thermal saturation and resistance-induced voltage drop. This voltage sag causes dimming headlights, unstable power delivery to sensitive engine management modules, and premature degradation of the starting battery.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered for sustained heavy-duty operation, this high-output replacement produces 300 amps of reliable current utilizing high-conductivity hairpin stator windings and heavy-duty internal bridge rectifiers. The casing features precision-machined aluminum architecture designed to dissipate heat away from the diodes and internal voltage regulator, preventing heat fade in high-temperature engine compartments. It operates as a direct bolt-on upgrade, utilizing factory mounting points while replacing worn OE hardware numbers such as \u003cstrong\u003e10392759\u003c\/strong\u003e and \u003cstrong\u003e15200268\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x 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;\"\u003e2007-2009 GMC Yukon\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 4.8L (LY2) \/ GMT900\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;\"\u003e295 hp \/ 305 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;\"\u003e8302N, 8302, 10392759, 15200268, 15263858, 8400078, AL8529X, 8302-300\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\u003e2007 GMC Yukon 4.8L V8 (SLE)\u003c\/li\u003e\n  \u003cli\u003e2008 GMC Yukon 4.8L V8 (SLE)\u003c\/li\u003e\n  \u003cli\u003e2009 GMC Yukon 4.8L V8 (SLE)\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 GMT900 Yukon?\u003c\/h4\u003e\n\u003cp\u003eYes, this unit is a direct bolt-on fit for the 2007-2009 GMC Yukon equipped with the \u003cstrong\u003eLY2\u003c\/strong\u003e 4.8L engine platform.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade my charging cables?\u003c\/h4\u003e\n\u003cp\u003eYes, installing a high-gauge power wire upgrade (Big 3 upgrade) with a 250-300A inline fuse is strongly recommended to handle the increased current safely without bottle-necking your charging system.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt for the rugged demands of full-size towing and high-payload hauling, this alternator provides continuous amperage stability so your truck's accessories and powertrain electronics run at peak operating efficiency under all environmental conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565621707000,"sku":"DS-E3MMB46TE","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-yukon-2007-2009-4-8l-1.jpg?v=1791070364","url":"https:\/\/performancechiptuning.com\/fr\/products\/high-output-alternator-for-gmc-yukon-2007-2009-4-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}