{"product_id":"86544818-genuine-gm-front-headlamp-assembly-for-sierra-hd-6-6l-v8","title":"86544818 Genuine GM Front Headlamp Assembly For Sierra HD 6.6L V8","description":"\u003ch2 data-start=\"479\" data-end=\"779\"\u003eDescription\u003c\/h2\u003e\n\u003cp data-start=\"81\" data-end=\"324\"\u003eThe 86544818 is a genuine GM front headlamp assembly engineered for Sierra HD trucks with the 6.6L V8 engine. It restores proper forward lighting and ensures correct fitment with the factory mounting and electrical systems.\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: 7.62343%; text-align: center; height: 19.6px;\"\u003e\u003cstrong\u003eYear\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 30.8035%; text-align: center; height: 19.6px;\"\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 33.088%; text-align: center; height: 19.6px;\"\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 27.9526%; text-align: center; height: 19.6px;\"\u003e\u003cstrong\u003eTrims\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 7.62343%; height: 39.2px;\"\u003e2025\u003c\/td\u003e\n\u003ctd style=\"width: 30.8035%; height: 39.2px;\"\u003eGMC Sierra 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 33.088%; height: 39.2px;\"\u003e6.6L V8 Diesel, 6.6L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.9526%; height: 39.2px;\"\u003ePro, SLE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 7.62343%; height: 39.2px;\"\u003e2025\u003c\/td\u003e\n\u003ctd style=\"width: 30.8035%; height: 39.2px;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 33.088%; height: 39.2px;\"\u003e6.6L V8 Diesel, 6.6L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.9526%; height: 39.2px;\"\u003ePro, SLE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 7.62343%; height: 39.2px;\"\u003e2024\u003c\/td\u003e\n\u003ctd style=\"width: 30.8035%; height: 39.2px;\"\u003eGMC Sierra 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 33.088%; height: 39.2px;\"\u003e6.6L V8 Diesel, 6.6L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.9526%; height: 39.2px;\"\u003ePro, SLE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 7.62343%; height: 39.2px;\"\u003e2024\u003c\/td\u003e\n\u003ctd style=\"width: 30.8035%; height: 39.2px;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 33.088%; height: 39.2px;\"\u003e6.6L V8 Diesel, 6.6L V8 Gas\u003c\/td\u003e\n\u003ctd style=\"width: 27.9526%; height: 39.2px;\"\u003ePro, SLE\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: 176.4px; width: 100% !important; table-layout: fixed !important; display: table !important;\" class=\"product-table\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width: 29.7677%;\"\u003e\n\u003ccol style=\"width: 70.0629%;\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e86544818\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eGM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eFront Headlamp Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e2024–2025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eGMC Yukon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003ePosition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eRight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eTrim Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003ePro, SLE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px;\"\u003e\u003cstrong\u003eLighting Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6px;\"\u003eType 3\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 86544818 front headlamp assembly is built to match factory performance and installation requirements:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to align correctly with Sierra HD front-end structure and mounting points.\u003c\/li\u003e\n\u003cli\u003eSupports proper electrical connection with the factory lighting harness.\u003c\/li\u003e\n\u003cli\u003eConstructed for direct installation without the need for modification.\u003c\/li\u003e\n\u003cli\u003eProvides consistent beam output for safe nighttime and low-visibility driving.\u003c\/li\u003e\n\u003cli\u003eMatches OEM connector and housing configuration for accurate fitment.\u003c\/li\u003e\n\u003cli\u003eManufactured to GM standards for reliable operation under normal conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1893\" data-end=\"1913\"\u003eApplication Notes\u003c\/h2\u003e\n\u003cp data-start=\"3420\" data-end=\"3618\"\u003eThe 86544818 is used on Sierra HD models equipped with the 6.6L V8 and factory-installed headlamp system. It mounts directly in place of the original unit using existing hardware and wiring connections.\u003cbr data-start=\"1300\" data-end=\"1303\"\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp data-start=\"3620\" data-end=\"3727\"\u003eAlways verify part number and vehicle configuration before installation.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"GM","offers":[{"title":"Default Title","offer_id":48535893704931,"sku":"86544818","price":1568.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/5122\/4547\/files\/s-l1600_f4c6ba08-986c-40a9-bdab-b59c59daf861.webp?v=1780565517","url":"https:\/\/unitautoparts.com\/products\/86544818-genuine-gm-front-headlamp-assembly-for-sierra-hd-6-6l-v8","provider":"Unit Auto Parts","version":"1.0","type":"link"}