{"product_id":"y6740003-genuine-paccar-hvac-heater-core","title":"Y6740003 Genuine Paccar HVAC Heater Core","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"205\" data-end=\"603\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe Y6740003 is a genuine Paccar HVAC heater core specified for Peterbilt and Kenworth T680 and T880 truck cabin heating applications, with a 2024 Kenworth T880 identified in the supplied take-off information. This heat exchanger transfers thermal energy from circulating engine coolant to air passing through the HVAC housing, allowing the vehicle's heating system to deliver warmed air into the passenger compartment.\u003c\/p\u003e\n\u003ch2\u003eProduct Features\u003c\/h2\u003e\n\u003cp data-start=\"632\" data-end=\"746\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cspan\u003eThe Y6740003 Paccar HVAC heater core is a coolant-to-air heat exchanger that supplies thermal energy to the truck's cabin heating system through the existing HVAC airflow arrangement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eTransfers heat from circulating engine coolant into the cabin ventilation airstream\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eAllows warmed air to pass through the vehicle's designated HVAC distribution system\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eOperates within the coolant circuit connected to the truck heater assembly\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eProvides an internal heat exchange surface for the passenger compartment heating process\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eWorks with the existing blower airflow to deliver heat through cabin outlets\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eFits the specified heater core application within compatible Paccar cab configurations\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGeneral Specifications\u003c\/h2\u003e\n\u003cdiv style=\"width: 100%; display: block;\"\u003e\n\u003ctable style=\"height: 147.45px; width: 100% !important; table-layout: fixed !important; display: table !important;\" class=\"product-table\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width: 29.5139%;\"\u003e\n\u003ccol style=\"width: 70.1389%;\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 10.25px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eCondition\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNew\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003ePart Number\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eY6740003\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePaccar\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003ePart Type\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHVAC Heater Core\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eVehicle Applications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePeterbilt, Kenworth T680, Kenworth T880\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eReferenced Source Vehicle\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2024 Kenworth T880\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eSystem\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCabin Heating \/ HVAC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eComponent Function\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCoolant-to-Air Heat Exchange\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eFitment Type\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDirect Replacement\u003c\/span\u003e\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\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp data-start=\"1579\" data-end=\"2015\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe Y6740003 should be installed after draining the necessary coolant from the heating circuit, inspecting the heater hose connections, and checking the HVAC housing for accumulated debris, coolant residue, or damaged sealing surfaces. Once the heater core is secured and the coolant lines are connected, refill and bleed the cooling system according to the applicable service procedure, inspect for leaks, and verify that heated air reaches the cab ventilation outlets.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp data-start=\"2025\" data-end=\"2165\" class=\"PDq2pG_selectionAnchorContainer\"\u003eAlways verify the original heater core part number, truck cab configuration, HVAC housing dimensions, coolant connection arrangement, and heating system layout before installation.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Paccar","offers":[{"title":"Default Title","offer_id":44131643883583,"sku":"Y6740003","price":287.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/3971\/7695\/files\/s-l1600_aa388d27-0fa7-428e-b39d-843ff461e980.webp?v=1792148001","url":"https:\/\/linetruckparts.com\/products\/y6740003-genuine-paccar-hvac-heater-core","provider":"Line Truck Parts","version":"1.0","type":"link"}