{"product_id":"high-output-alternator-for-gmc-sierra-2014-2018-4-3l-5-3l-6-0l-6-2l","title":"High Output Alternator for GMC Sierra (2014-2018) 4.3L 5.3L 6.0L 6.2L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Amp 350A Replacement Alternator for 2014-2018 GMC Sierra (K2XX)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 350-amp high output alternator delivers sustained electrical current to power heavy auxiliary loads, audio setups, winches, and fleet equipment on 2014-2018 GMC Sierra trucks without system voltage drop.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Sierra Charging System Bottleneck\u003c\/h3\u003e\n\u003cp\u003eThe factory 150-amp to 170-amp charging units fitted to the \u003cstrong\u003eK2XX\u003c\/strong\u003e Sierra struggle under sustained electrical load. Factory rectifiers and internal voltage regulators suffer thermal saturation when powering high-amperage auxiliary lighting, commercial snow plows, heavy winches, or aftermarket audio systems. This excessive thermal stress leads to early diode breakdown, premature rotor failure, and critical voltage drop that impairs electronic throttle control and direct-injection management systems.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed in the USA, this heavy-duty 350-amp alternator utilizes precision copper hairpin-wound stators and a heavy-duty 12-diode bridge rectifier to maximize current output while maintaining thermal efficiency. The assembly features an upgraded rotor core and high-grade aluminum drive-end housings for improved heat dissipation over OEM units like \u003cstrong\u003e84206550\u003c\/strong\u003e and \u003cstrong\u003e104211-8340\u003c\/strong\u003e. It maintains stable DC voltage output across all RPM ranges, supplying high amperage at idle without spiking chassis modules.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x 350 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;\"\u003e2014-2018 GMC Sierra 1500 \/ 2500HD \/ 3500HD\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;\"\u003eLV3 (4.3L), L83 (5.3L), L96 (6.0L), L86 (6.2L) \/ K2XX\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;\"\u003e285–420 hp \/ 305–460 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;\"\u003e42074, 14007, 11785, 10255, 42093, 14009, 42095, 14020, 104211-8340, 104211-8350, 22747894, 22747896, 104211-9110, TN104211-9110, 104211-9112, 104210-6870, 1042106860, 2100521, 22065, 22069, 2100518, 2100295, 22068, 2100285, 22048, 84206550, 84143542, 84143539, 23304114, 22949466, 84143543, 84143540\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\u003e2014-2018 GMC Sierra 1500 4.3L V6\u003c\/li\u003e\n  \u003cli\u003e2014-2018 GMC Sierra 1500 5.3L V8\u003c\/li\u003e\n  \u003cli\u003e2014-2018 GMC Sierra 2500HD \/ 3500HD 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e2014-2018 GMC Sierra 1500 6.2L 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 K2XX Sierra?\u003c\/h4\u003e\n\u003cp\u003eYes, this unit directly bolts onto the 2014-2018 GMC Sierra platform equipped with the \u003cstrong\u003eLV3\u003c\/strong\u003e, \u003cstrong\u003eL83\u003c\/strong\u003e, \u003cstrong\u003eL96\u003c\/strong\u003e, or \u003cstrong\u003eL86\u003c\/strong\u003e engine configurations using factory bracket mounting positions.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade the primary charging cable?\u003c\/h4\u003e\n\u003cp\u003eDue to the substantial 350-amp output rating, upgrading to a 1\/0 AWG fused battery-to-alternator cable (Big 3 upgrade) is strongly recommended to handle current throughput safely.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Professional Grade Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-demand work trucks, heavy commercial towing rigs, and off-road trail vehicles, this high-output system provides reliable voltage stability during grueling duty cycles and sub-zero winch recoveries without risk of electrical brownouts.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565733413112,"sku":"DS-EO34S511V","price":404.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-gmc-sierra-2014-2018-4-3l-5-3l-6-0l-6-2l-1.jpg?v=1791072877","url":"https:\/\/performancechiptuning.com\/de\/products\/high-output-alternator-for-gmc-sierra-2014-2018-4-3l-5-3l-6-0l-6-2l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}