{"product_id":"84143542-genuine-gm-alternator-for-express-savana-silverado-sierra-4-3l-6-0l","title":"84143542 Genuine GM Alternator For Express Savana Silverado Sierra 4.3L 6.0L","description":"\u003ch2 data-start=\"479\" data-end=\"779\"\u003eDescription\u003c\/h2\u003e\n\u003cp data-start=\"479\" data-end=\"779\"\u003eThe 84143542 alternator is designed to generate electrical power and maintain battery charge while the engine is running. It delivers stable voltage output to support vehicle electrical systems and ensures reliable performance across a wide range of GM vans and heavy-duty truck applications.\u003c\/p\u003e\n\u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: autopx;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 13.3094%; height: 19.6px; text-align: center;\"\u003e\u003cstrong\u003eYear\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 36.1142%; height: 19.6px; text-align: center;\"\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 28.9937%; height: 19.6px; text-align: center;\"\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 20.6835%; height: 19.6px; text-align: center;\"\u003e\u003cstrong\u003eTrims\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"width: 13.3094%;\"\u003e2025–2021\u003c\/td\u003e\n\u003ctd style=\"width: 36.1142%;\"\u003eChevrolet Express 2500 \/ 3500\u003c\/td\u003e\n\u003ctd style=\"width: 28.9937%;\"\u003e4.3L V6 - Gas\/Flex\u003c\/td\u003e\n\u003ctd style=\"width: 20.6835%;\"\u003eBase, LS, LT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 13.3094%;\"\u003e2025–2021\u003c\/td\u003e\n\u003ctd style=\"width: 36.1142%;\"\u003eGMC Savana 2500 \/ 3500\u003c\/td\u003e\n\u003ctd style=\"width: 28.9937%;\"\u003e4.3L V6 - Gas\/Flex\u003c\/td\u003e\n\u003ctd style=\"width: 20.6835%;\"\u003eBase, LS, LT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 13.3094%;\"\u003e2020–2017\u003c\/td\u003e\n\u003ctd style=\"width: 36.1142%;\"\u003eChevrolet Express 2500 \/ 3500 \/ 4500\u003c\/td\u003e\n\u003ctd style=\"width: 28.9937%;\"\u003e4.3L V6 \/ 4.8L \/ 6.0L V8\u003c\/td\u003e\n\u003ctd style=\"width: 20.6835%;\"\u003eBase, LS, LT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 13.3094%;\"\u003e2020–2017\u003c\/td\u003e\n\u003ctd style=\"width: 36.1142%;\"\u003eGMC Savana 2500 \/ 3500 \/ 4500\u003c\/td\u003e\n\u003ctd style=\"width: 28.9937%;\"\u003e4.3L V6 \/ 4.8L \/ 6.0L V8\u003c\/td\u003e\n\u003ctd style=\"width: 20.6835%;\"\u003eBase, LS, LT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 13.3094%;\"\u003e2019–2015\u003c\/td\u003e\n\u003ctd style=\"width: 36.1142%;\"\u003eChevrolet Silverado 2500 HD \/ 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.9937%;\"\u003e6.0L V8 - Gas\/CNG\/Flex\u003c\/td\u003e\n\u003ctd style=\"width: 20.6835%;\"\u003eHigh Country, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 13.3094%;\"\u003e2019–2015\u003c\/td\u003e\n\u003ctd style=\"width: 36.1142%;\"\u003eGMC Sierra 2500 HD \/ 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.9937%;\"\u003e6.0L V8 - Gas\/CNG\/Flex\u003c\/td\u003e\n\u003ctd style=\"width: 20.6835%;\"\u003eBase, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 13.3094%;\"\u003e2019–2017\u003c\/td\u003e\n\u003ctd style=\"width: 36.1142%;\"\u003eChevrolet Suburban 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.9937%;\"\u003e6.0L V8 - Gas\/Flex\u003c\/td\u003e\n\u003ctd style=\"width: 20.6835%;\"\u003eLS, LT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eGeneral Specifications\u003c\/h2\u003e\n\u003cdiv style=\"width: 100%; display: block;\"\u003e\n\u003ctable style=\"height: 127.6px; width: 100% !important; table-layout: fixed !important; display: table !important;\" class=\"product-table\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width: 28.0576%;\"\u003e\n\u003ccol style=\"width: 71.5827%;\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e84143542\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAlternator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2015–2025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Description\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGenerator Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.2 x 13.6 x 10.2 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12.35 Pounds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp data-start=\"1555\" data-end=\"1574\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"1555\" data-end=\"1574\"\u003eProduct Features\u003c\/h2\u003e\n\u003cp\u003eThe 84143542 alternator is built to match factory performance and installation requirements:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenerates electrical power for vehicle systems during engine operation\u003c\/li\u003e\n\u003cli\u003eMaintains proper battery charge under varying load conditions\u003c\/li\u003e\n\u003cli\u003eDesigned for direct-fit installation with OEM mounting points\u003c\/li\u003e\n\u003cli\u003eProvides stable voltage output for factory electrical systems\u003c\/li\u003e\n\u003cli\u003eSupports both 4.3L V6 and 6.0L V8 engine applications\u003c\/li\u003e\n\u003cli\u003eIntegrates with factory wiring and charging system components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1893\" data-end=\"1913\"\u003eApplication Notes\u003c\/h2\u003e\n\u003cp data-start=\"2052\" data-end=\"2276\"\u003eThe 84143542 alternator is used across multiple GM vans and heavy-duty trucks equipped with 4.3L V6 and 6.0L V8 engines. Proper installation ensures correct charging system performance and long-term electrical reliability.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp data-start=\"2278\" data-end=\"2393\"\u003eAlways verify part number, engine configuration, and vehicle compatibility before installation.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"GM","offers":[{"title":"Default Title","offer_id":48525401063651,"sku":"84143542","price":330.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/5122\/4547\/files\/s-l1600_621a1a46-c758-4086-8ec5-6b6e9f82773f.webp?v=1774020428","url":"https:\/\/unitautoparts.com\/products\/84143542-genuine-gm-alternator-for-express-savana-silverado-sierra-4-3l-6-0l","provider":"Unit Auto Parts","version":"1.0","type":"link"}