{"product_id":"cummins-single-cam-compact-graphite-iron-cgi-cylinder-head-stage-3","title":"Cummins single cam Compact Graphite Iron (CGI) Cylinder Head Stage 3","description":"\u003cdiv class=\"relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]\"\u003e\n\u003cdiv class=\"flex flex-grow flex-col gap-3\"\u003e\n\u003cdiv class=\"min-h-[20px] flex flex-col items-start gap-4 whitespace-pre-wrap\"\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\u003cspan\u003eCompact Graphite Iron (CGI) cylinder heads are manufactured with a distinct molecular structure from traditional gray iron cylinder heads. CGI exhibits significant advantages in high-heat and high-stress applications due to its 75% increased strength and enhanced thermal conductivity compared to standard gray iron heads. These are not the same heads you see advertised everywhere else, They are much better.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\u003cspan\u003eThey are fire ringed and it sits just outside of normal head gasket crush ring helping prevent gasket failure.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\u003cspan\u003eInconel valves are significantly stronger and can withstand temperatures of up to 2600 degrees. Fire rings are positioned just outside the standard head gasket crush ring to prevent gasket failure.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\u003cspan\u003eThe Cummins single cam Stage 3 Cylinder Head is a high-performance Compact Graphite Iron aftermarket engine component specifically designed for Cummins engines. This cylinder head is engineered to deliver superior performance, durability, and reliability compared to the original equipment manufacturer (OEM) cylinder head. This is the same head we run on our race engines. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\u003cp\u003eA \u003cstrong\u003eCGI (Compacted Graphite Iron) cylinder head\u003c\/strong\u003e is often considered superior to a \u003cstrong\u003eregular cast iron\u003c\/strong\u003e cylinder head due to its enhanced strength, thermal properties, and overall performance benefits. Here’s why:\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e1. Strength-to-Weight Ratio\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCGI is about 75% stronger\u003c\/strong\u003e than conventional gray cast iron.\u003c\/li\u003e\n\u003cli\u003eIt is also \u003cstrong\u003elighter\u003c\/strong\u003e, reducing overall engine weight while maintaining durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e2. Higher Thermal Conductivity\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCGI has better \u003cstrong\u003eheat dissipation\u003c\/strong\u003e, which helps in reducing hot spots and preventing engine overheating.\u003c\/li\u003e\n\u003cli\u003eImproved cooling allows for \u003cstrong\u003ehigher performance tuning\u003c\/strong\u003e without risking damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e3. Greater Durability \u0026amp; Fatigue Resistance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRegular cast iron is \u003cstrong\u003ebrittle\u003c\/strong\u003e, making it more prone to cracking under stress.\u003c\/li\u003e\n\u003cli\u003eCGI offers \u003cstrong\u003ehigher resistance to wear and fatigue\u003c\/strong\u003e, making it ideal for high-performance or heavy-duty engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e4. Better Machinability \u0026amp; Design Flexibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDespite being stronger, CGI can be \u003cstrong\u003emachined more precisely\u003c\/strong\u003e than traditional cast iron.\u003c\/li\u003e\n\u003cli\u003eThis allows for \u003cstrong\u003ecomplex, high-efficiency designs\u003c\/strong\u003e, improving airflow and combustion performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e5. Fuel Efficiency \u0026amp; Performance Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe reduced weight and better heat management lead to \u003cstrong\u003ebetter fuel economy\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCGI heads allow for \u003cstrong\u003ehigher compression ratios and more efficient combustion\u003c\/strong\u003e, which boosts horsepower and torque.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e6. Emission Reduction\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWith improved combustion efficiency, CGI heads contribute to \u003cstrong\u003elower emissions\u003c\/strong\u003e by burning fuel more completely.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e7. Application in Modern Engines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMany \u003cstrong\u003emodern diesel and high-performance gasoline engines\u003c\/strong\u003e use CGI cylinder heads to handle \u003cstrong\u003ehigher pressures and temperatures\u003c\/strong\u003e without increasing engine weight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn short, \u003cstrong\u003eCGI cylinder heads offer the best of both worlds: the durability of cast iron with the lightweight and performance benefits of aluminum, making them a superior choice for high-performance and heavy-duty engines.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOEM cross reference numbers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e3686432, 3686434, 3686660, 3686660, 3686774, 3686880, 3686881, 3687607, 3688761, 3688800, 4298235, 4298236, 4298237, 4298237, 4298238, 4356434, 4386009, 5394197, 5394198, 79438920, 79457900, 79469386, 79527893, 79575425, 4374091\u003c\/p\u003e\n\u003cp\u003eDiesel Freak LLC is in no way associated, sponsored, or affiliated with Any OEM manufacturer. Products from Diesel Freak LLC presented in this listing are not to be confused with any of the products or trademarks of any OEM company. All parts listed to fit these manufacturers are replacement aftermarket parts.\u003c\/p\u003e\n\u003cp\u003e If you don’t find what you are looking for here or in any of our other listings feel free to contact us\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAny mention of OEM names or OEM product ID numbers\/descriptions\/model numbers is intended for identification purposes only and does not indicate that it is an OEM part.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Diesel Freak","offers":[{"title":"Default Title","offer_id":50288497033409,"sku":"20231020003","price":4929.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/4251\/2577\/files\/cat-compact-graphite-iron-cgi-cylinder-head-stage-3-268716_bdc45ce2-3363-491d-9468-9fc520977cef.jpg?v=1780414598","url":"https:\/\/www.summitsourceusa.com\/products\/cummins-single-cam-compact-graphite-iron-cgi-cylinder-head-stage-3","provider":"SUMMIT SOURCE USA","version":"1.0","type":"link"}