{"product_id":"2239250-caterpillar-c15-cgi-fire-ring-cylinder-head-stage-6","title":"2239250 (223-9250) Caterpillar C15 \/ 3406E CGI Fire-Ring Loaded Cylinder Head – New, Stage 6 Inconel","description":"\u003cp\u003eOur top-tier \u003cstrong\u003eStage 6\u003c\/strong\u003e head for the \u003cstrong\u003eCaterpillar 3406E, C15 and C15 ACERT\u003c\/strong\u003e, built to replace CAT \u003cstrong\u003e223-9250 (2239250)\u003c\/strong\u003e. It combines a \u003cstrong\u003ecompacted graphite iron (CGI)\u003c\/strong\u003e casting, \u003cstrong\u003efire-ringed\u003c\/strong\u003e combustion seals and \u003cstrong\u003eInconel intake and exhaust valves\u003c\/strong\u003e for high-horsepower, high-cylinder-pressure builds. It arrives assembled and ready to bolt on, with no core to send back.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNew CGI (compacted graphite iron) cylinder head casting, fire-ringed\u003c\/li\u003e\n\u003cli\u003eNew intake and exhaust valves (Stage 6 — Inconel intake and Inconel exhaust)\u003c\/li\u003e\n\u003cli\u003eNew valve springs, retainers and keepers\u003c\/li\u003e\n\u003cli\u003eValve guides and valve stem seals installed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e head gasket set, head bolts, injectors, rocker assemblies. You will need a fire-ring head gasket — ask us and we will quote it with your head.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eCAT 223-9250 (2239250) and cross-references below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine\u003c\/td\u003e\n\u003ctd\u003eCaterpillar 3406E, C15, C15 ACERT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew — no core\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eLoaded (valves, springs, retainers, keepers, guides, seals)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve package\u003c\/td\u003e\n\u003ctd\u003eStage 6 — Inconel intake and exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCasting\u003c\/td\u003e\n\u003ctd\u003eCGI (compacted graphite iron)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCombustion seal\u003c\/td\u003e\n\u003ctd\u003eFire-ringed — requires a fire-ring head gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eJAK's Diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eAlso available: \u003ca href=\"\/products\/2239250-caterpillar-c15-acert-cylinder-head-stage-1-regular-valves\"\u003eStage 1\u003c\/a\u003e, \u003ca href=\"\/products\/2239250-caterpillar-c15-acert-cylinder-head-stage-2-inconel-exhaust\"\u003eStage 2\u003c\/a\u003e and \u003ca href=\"\/products\/2239250-caterpillar-c15-acert-cylinder-head-stage-3-inconel-valves\"\u003eStage 3\u003c\/a\u003e C15 heads.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Caterpillar 3406E, C15 and C15 ACERT on-highway engines that use the 223-9250 head family. We confirm fitment by engine serial number (ESN) or casting number before every head ships.\u003c\/p\u003e\n\n\u003ch2\u003eReplaces \/ Cross-Reference Part Numbers\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOEM and reman numbers:\u003c\/strong\u003e 2239250, 223-9250, 0R9537, 0R7594, 10R5985, 1427341, 1604347, 2454324, 2436741, 2635055, 3128347, 3180476, 20R2647, 20R2648, 20R0409, 20R1107, 20R1108, 20R1109, 20R1183, 10R9547, 2672060, 2672063\u003c\/p\u003e\n\n\u003ch2\u003eShipping, Core \u0026amp; Warranty\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo core charge, no core return.\u003c\/strong\u003e This is a new casting, not an exchange unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreight:\u003c\/strong\u003e ships crated by LTL freight. Freight is free to a commercial address with a forklift or dock. Residential, liftgate and terminal delivery can be quoted — call before you order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocal pickup:\u003c\/strong\u003e available in Henderson, CO by arrangement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1 year against defects in materials and workmanship.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs this head new or remanufactured?\u003c\/h3\u003e\n\u003cp\u003eNew. It is a new casting assembled with new valvetrain components — not a rebuilt core.\u003c\/p\u003e\n\u003ch3\u003eDo I have to send back a core?\u003c\/h3\u003e\n\u003cp\u003eNo. There is no core charge and nothing to return.\u003c\/p\u003e\n\u003ch3\u003eWhat else do I need to install it?\u003c\/h3\u003e\n\u003cp\u003ePlan on a new head gasket set and head bolts for the C15. They are not included. Message us and we will match the right kit to your engine serial number.\u003c\/p\u003e\n\u003ch3\u003eHow do I confirm it fits my C15?\u003c\/h3\u003e\n\u003cp\u003eSend us your engine serial number (ESN) or the casting number from your old head. We verify fitment against 223-9250 before the head ships.\u003c\/p\u003e\n\u003ch3\u003eDoes a fire-ring head need a special head gasket?\u003c\/h3\u003e\n\u003cp\u003eYes. A fire-ringed head must be paired with a matching fire-ring head gasket. It is sold separately — ask us and we will quote the correct gasket with your head.\u003c\/p\u003e\n\u003ch3\u003eWhat is a CGI cylinder head?\u003c\/h3\u003e\n\u003cp\u003eCGI is compacted graphite iron. It is stronger and more resistant to cracking from heat cycling than standard gray-iron castings, which is why it is used on high-output and high-EGT builds.\u003c\/p\u003e\n\u003ch3\u003eHow long does delivery take?\u003c\/h3\u003e\n\u003cp\u003eHeads are crated and handed to the LTL carrier in 1–2 business days. Transit is typically 2–5 business days depending on your location.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this head new or remanufactured?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"New. It is a new casting assembled with new valvetrain components - not a rebuilt core.\"}}, {\"@type\": \"Question\", \"name\": \"Do I have to send back a core?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. There is no core charge and nothing to return.\"}}, {\"@type\": \"Question\", \"name\": \"What else do I need to install it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Plan on a new head gasket set and head bolts for the C15. They are not included. Message us and we will match the right kit to your engine serial number.\"}}, {\"@type\": \"Question\", \"name\": \"How do I confirm it fits my C15?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Send us your engine serial number (ESN) or the casting number from your old head. We verify fitment against 223-9250 before the head ships.\"}}, {\"@type\": \"Question\", \"name\": \"Does a fire-ring head need a special head gasket?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. A fire-ringed head must be paired with a matching fire-ring head gasket. It is sold separately - ask us and we will quote the correct gasket with your head.\"}}, {\"@type\": \"Question\", \"name\": \"What is a CGI cylinder head?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"CGI is compacted graphite iron. It is stronger and more resistant to cracking from heat cycling than standard gray-iron castings, which is why it is used on high-output and high-EGT builds.\"}}, {\"@type\": \"Question\", \"name\": \"How long does delivery take?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Heads are crated and handed to the LTL carrier in 1-2 business days. Transit is typically 2-5 business days depending on your location.\"}}]}\u003c\/script\u003e\n\u003cp\u003eQuestions? Call JAK's Diesel at \u003ca href=\"tel:+17204456249\"\u003e(720) 445-6249\u003c\/a\u003e. See all \u003ca href=\"\/collections\/caterpillar-c15-parts\"\u003eCaterpillar C15 parts\u003c\/a\u003e, \u003ca href=\"\/collections\/performance-heads\"\u003eperformance heads\u003c\/a\u003e or \u003ca href=\"\/collections\/cylinder-heads\"\u003ediesel cylinder heads\u003c\/a\u003e.\u003c\/p\u003e","brand":"JAK's Diesel","offers":[{"title":"Default Title","offer_id":67863837049017,"sku":"JAKS-2239250CGIFR","price":5349.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6171\/4361\/files\/2239250cgifr-1.jpg?v=1792688305","url":"https:\/\/www.jaksdiesel.com\/products\/2239250-caterpillar-c15-cgi-fire-ring-cylinder-head-stage-6","provider":"JAK's Diesel","version":"1.0","type":"link"}