{"product_id":"12678993-genuine-gm-fuel-injection-pump-for-silverado-sierra-6-6l-diesel","title":"12678993 Genuine GM Fuel Injection Pump For Silverado Sierra 6.6L Diesel","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe 12678993 is a genuine GM high-pressure fuel injection pump intended for the specified Chevrolet Silverado HD and GMC Sierra HD trucks with the 6.6L V8 diesel engine. It pressurizes diesel fuel for delivery into the engine injection circuit and fits the established GM fuel-system layout.\u003c\/p\u003e\n\u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 500px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003cth style=\"width: 6.29496%; text-align: center; height: 19.6px;\" align=\"right\"\u003e\u003cstrong\u003eYear\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 17.9856%; text-align: center; height: 19.6px;\"\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 28.5971%; text-align: center; height: 19.6px;\"\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 46.223%; 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\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2026\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eGMC Sierra 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eAT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2025\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eChevrolet Silverado 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel, 6.6L V8 - Flex, 6.6L V8 - Gas\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eCustom, High Country, LT, LTZ, WT, ZR2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2025\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eChevrolet Silverado 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel, 6.6L V8 - Flex, 6.6L V8 - Gas\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eHigh Country, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2025\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eGMC Sierra 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel, 6.6L V8 - Flex, 6.6L V8 - Gas\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eAT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2025\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel, 6.6L V8 - Flex, 6.6L V8 - Gas\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eAT4, Denali, Denali Ultimate, Pro, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2024\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eChevrolet Silverado 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel, 6.6L V8 - Flex, 6.6L V8 - Gas\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eCustom, High Country, LT, LTZ, WT, ZR2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2024\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eChevrolet Silverado 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel, 6.6L V8 - Flex, 6.6L V8 - Gas\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eHigh Country, LT, LTZ, WT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2024\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eGMC Sierra 2500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel, 6.6L V8 - Flex, 6.6L V8 - Gas\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eAT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2024\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel, 6.6L V8 - Flex, 6.6L V8 - Gas\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eAT4, Denali, Denali Ultimate, Pro, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2023\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eAT4, Denali, Pro, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2022\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eAT4, Denali, Pro, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2021\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eAT4, Base, Denali, SLE, SLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 6.29496%;\"\u003e2020\u003c\/td\u003e\n\u003ctd style=\"width: 17.9856%;\"\u003eGMC Sierra 3500 HD\u003c\/td\u003e\n\u003ctd style=\"width: 28.5971%;\"\u003e6.6L V8 - Diesel\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eAT4, Base, Denali, SLE, SLT\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 class=\"product-table\" style=\"height: 215.6px; width: 100% !important; table-layout: fixed !important; display: table !important;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 25.7194%;\"\u003e \u003ccol style=\"width: 73.9209%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12678993\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Pressure Fuel Injection Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2020–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado HD, GMC Sierra HD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.6L V8 Diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel System Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Pressure Diesel Fuel Delivery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.4 × 9.7 × 8.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12.30 lbs\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\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelated Service Parts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSeal and Bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eProduct Features\u003c\/h2\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe 12678993 high-pressure fuel injection pump is configured to operate within the factory 6.6L diesel fuel system:\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRaises diesel fuel to the pressure required by the engine injection circuit\u003c\/li\u003e\n\u003cli\u003eWorks with the fuel-system configuration specified for applicable Silverado HD and Sierra HD trucks\u003c\/li\u003e\n\u003cli\u003eInterfaces with the existing fuel lines and related injection components\u003c\/li\u003e\n\u003cli\u003eMounts at the designated high-pressure pump position on the 6.6L V8 diesel engine\u003c\/li\u003e\n\u003cli\u003eMaintains fuel delivery through the original high-pressure circuit during engine operation\u003c\/li\u003e\n\u003cli\u003eUses the associated seal and bolt identified for servicing this pump installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplication Notes\u003c\/h2\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe 12678993 applies to the specified GM heavy-duty truck configurations equipped with the applicable 6.6L V8 diesel fuel system. Inspect the fuel connections and mounting area before installation, and account for the related seal and bolt identified as non-reusable service components.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eVerify part number, VIN, model year, 6.6L V8 diesel engine, fuel-system configuration, and applicable factory equipment before installation.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"GM","offers":[{"title":"Default Title","offer_id":49527997628643,"sku":"12678993","price":725.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/5122\/4547\/files\/12731367_b60db1da-0710-482e-b729-50841e9436f5.png?v=1788533666","url":"https:\/\/unitautoparts.com\/products\/12678993-genuine-gm-fuel-injection-pump-for-silverado-sierra-6-6l-diesel","provider":"Unit Auto Parts","version":"1.0","type":"link"}