{"title":"Cylinder Head","description":"\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eGenuine OEM Cylinder Heads\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe cylinder head seals the top of each combustion chamber and houses the valvetrain, so cracks, warping, or a blown gasket surface here directly affect compression and power. Common signs are coolant mixing with oil, white smoke from the exhaust, overheating, or a noticeable loss of compression and power. A generic head rarely matches the exact port geometry, valve seat angles, and casting tolerances of the original design, which can cause poor sealing or compatibility issues with existing components. That's why every cylinder head in this collection is genuine OEM, matched to the manufacturer's original part number.\u003c\/p\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eWhat's in this category\u003c\/h4\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis collection covers genuine OEM cylinder heads for heavy-duty trucks and equipment, cast and machined to the exact port geometry and sealing surface specifications the original engine design requires. New listings are added regularly as inventory expands.\u003c\/p\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eWhy order your cylinder head here\u003c\/h4\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eGenuine OEM only\u003c\/strong\u003e — every head is matched to the manufacturer's original part number, not a generic equivalent\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eBuilt for accurate fitment\u003c\/strong\u003e — listings include the exact OEM number so you can verify the right part before you buy\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFast turnaround\u003c\/strong\u003e — ships quickly to restore full engine performance and get your vehicle back on the road\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eFAQ\u003c\/h4\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003e\u003cem\u003eWhat does a cylinder head do?\u003c\/em\u003e\u003c\/strong\u003e It seals the top of the engine block, houses the valves and combustion chambers, and directs the flow of air and fuel in and exhaust out.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003e\u003cem\u003eSigns of a failing cylinder head?\u003c\/em\u003e\u003c\/strong\u003e Coolant and oil mixing, white smoke from the exhaust, engine overheating, or a noticeable drop in compression and power.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003e\u003cem\u003eGenuine OEM or aftermarket?\u003c\/em\u003e\u003c\/strong\u003e All parts here are genuine OEM — no generic substitutes.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003e\u003cem\u003eHow do I find the right cylinder head?\u003c\/em\u003e\u003c\/strong\u003e Check the part number on your current head, or reference it in your service manual for the correct engine configuration, then search that number above.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eBrowse the full selection below, or search by OEM part number to find your exact match.\u003c\/p\u003e","products":[{"product_id":"2304398-genuine-paccar-cylinder-head","title":"2304398 Genuine Paccar Cylinder Head","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"107\" data-end=\"513\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe 2304398 is a genuine Paccar cylinder head designed for 2024 Kenworth T880 and DAF XF\/XF106 trucks equipped with the MX-13 diesel engine. Mounted on top of the engine block, it works with the head gasket to seal the combustion chambers while housing the valves, injector locations, and intake and exhaust ports. \u003c\/p\u003e\n\u003ch2 data-start=\"205\" data-end=\"603\" class=\"PDq2pG_selectionAnchorContainer\"\u003eProduct Features\u003c\/h2\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:58224564-87a4-44d9-8528-02bc733c990f-8\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:58224564-87a4-44d9-8528-02bc733c990f-8\" data-turn-id-container=\"request-WEB:58224564-87a4-44d9-8528-02bc733c990f-8\" data-testid=\"conversation-turn-18\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:58224564-87a4-44d9-8528-02bc733c990f-8\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:58224564-87a4-44d9-8528-02bc733c990f-8\" data-turn-id-container=\"request-WEB:58224564-87a4-44d9-8528-02bc733c990f-8\" data-testid=\"conversation-turn-18\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-id=\"56fba6e4-7996-438e-bcb1-761e3de14324\" data-message-author-role=\"assistant\"\u003e\n\u003cdiv data-dil-widget-copy-target=\"\" class=\"puik-root not-prose not-markdown\" data-theme=\"dark\"\u003e\n\u003cdiv dir=\"auto\" class=\"fv0XaG_DilRenderer fv0XaG_DilResponseRoot w-full max-w-full\" data-d-direction=\"col\"\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:40769535-1772-4748-95eb-4ac70e8f9621-24\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:40769535-1772-4748-95eb-4ac70e8f9621-24\" data-turn-id-container=\"request-WEB:40769535-1772-4748-95eb-4ac70e8f9621-24\" data-testid=\"conversation-turn-8\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden @[53.5rem]\/main:[--thread-content-max-width:48rem] relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"98db2104-055b-5d5a-9dd2-6158f72eee98\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5.6-sol-wm\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:40769535-1772-4748-95eb-4ac70e8f9621-32\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:40769535-1772-4748-95eb-4ac70e8f9621-32\" data-turn-id-container=\"request-WEB:40769535-1772-4748-95eb-4ac70e8f9621-32\" data-testid=\"conversation-turn-24\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden @[53.5rem]\/main:[--thread-content-max-width:48rem] relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"02d3e511-770f-5398-b282-dcab5aec7ca8\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5.6-sol-wm\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003cp data-start=\"741\" data-end=\"898\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe 2304398 cylinder head is manufactured to Paccar factory specifications for sealing the combustion chambers and managing airflow through the MX-13 engine.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"900\" data-end=\"1606\"\u003e\n\u003cli data-start=\"900\" data-end=\"1010\"\u003ePositioned on top of the engine block, the cylinder head forms the upper section of each combustion chamber.\u003c\/li\u003e\n\u003cli data-start=\"1011\" data-end=\"1110\"\u003eWorking with the head gasket, its machined surface seals combustion pressure above the cylinders.\u003c\/li\u003e\n\u003cli data-start=\"1111\" data-end=\"1203\"\u003eIntake passages formed within the head direct incoming air toward the combustion chambers.\u003c\/li\u003e\n\u003cli data-start=\"1204\" data-end=\"1300\"\u003eSeparate exhaust ports route burned gases away from the cylinders and into the exhaust system.\u003c\/li\u003e\n\u003cli data-start=\"1301\" data-end=\"1400\"\u003eInjector mounting locations position the diesel injector nozzles directly at the combustion area.\u003c\/li\u003e\n\u003cli data-start=\"1401\" data-end=\"1504\"\u003eIntegrated coolant channels circulate engine coolant around high-temperature sections of the casting.\u003c\/li\u003e\n\u003cli data-start=\"1505\" data-end=\"1606\"\u003eValve locations within the head control the opening and closing of the intake and exhaust passages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eGeneral Specifications\u003c\/h2\u003e\n\u003cdiv style=\"width: 100%; display: block;\"\u003e\n\u003ctable style=\"height: 68.8px; width: 100% !important; table-layout: fixed !important; display: table !important;\" class=\"product-table\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width: 29.5154%;\"\u003e\n\u003ccol style=\"width: 70.1909%;\"\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;\"\u003e2304398\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;\"\u003ePaccar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"height: 10px;\"\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 10px;\"\u003eCylinder Head\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=\"1959\" data-end=\"2195\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe 2304398 installs on the prepared engine-block deck with the correct cylinder head gasket. Follow the Paccar tightening sequence and torque specifications, then complete the required valve and injector adjustments.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp data-start=\"2414\" data-end=\"2590\" class=\"PDq2pG_selectionAnchorContainer\"\u003eVerify part number 2304398, MX-13 engine configuration, EPA21 specification, vehicle application, and cylinder-head gasket requirements before installation.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Paccar","offers":[{"title":"Default Title","offer_id":44124835577919,"sku":"2304398","price":9600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/3971\/7695\/files\/894b659de0f03ca1d5686729963d9dff.jpg?v=1792084231"}],"url":"https:\/\/linetruckparts.com\/collections\/cylinder-head.oembed","provider":"Line Truck Parts","version":"1.0","type":"link"}