{"product_id":"industrial-injection-premium-stock-plus-cylinder-head-with-fire-rings-03-07-ram-5-9l-cummins","title":"Industrial Injection Premium Stock Plus Cylinder Head With Fire Rings 03-07 Ram 5.9L Cummins","description":"\u003cp\u003eThinking about upgrading to Fire Rings? Radius-cut fire ring grooves create a stronger, more reliable combustion seal, allowing a 12-Valve Cummins engine to handle higher boost and cylinder pressure without head gasket failure. If you are planning on pushing your Cummins power to the limit, ensure your engine can withstand the extra stress that higher-performing injectors and fuel systems can impose with a cylinder head designed to handle it. Get an affordable and reliable upgraded head with Industrial Injection's Premium Stock Plus Cylinder Head.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE: Fire Ring Head Gasket Sold Separately. Installation of a fire ring gasket requires high yield head studs to ensure proper seat of the head to the cylinder block.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003ePrecision Remanufacturing Process for Cylinder Heads\u003c\/h2\u003e\n\u003cp\u003eEvery \u003cstrong\u003eremanufactured cylinder head\u003c\/strong\u003e undergoes a detailed cleaning, inspection, and machining process to ensure it meets strict quality standards for \u003cstrong\u003ediesel engine performance, durability, and reliability\u003c\/strong\u003e. This comprehensive remanufacturing process helps restore the strength and efficiency expected from a \u003cstrong\u003eCummins diesel engine\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eThorough Cleaning \u0026amp; Inspection\u003c\/h2\u003e\n\u003cp\u003eEach cylinder head begins with a deep cleaning process to remove contaminants and prepare the casting for inspection and machining.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-pressure jet washing\u003c\/strong\u003e removes oil, grease, and debris\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass bead blasting\u003c\/strong\u003e eliminates carbon buildup from the casting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnaflux inspection\u003c\/strong\u003e (for cast iron heads) detects hidden cracks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure testing\u003c\/strong\u003e verifies structural integrity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual inspection\u003c\/strong\u003e ensures the casting is free of defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eValve guides and valve seats are removed as needed to prepare the cylinder head for machining or port work.\u003c\/p\u003e\n\u003ch2\u003eUpgraded Heat-Treated Valve Guides\u003c\/h2\u003e\n\u003cp\u003eNew \u003cstrong\u003ehigh-strength alloy valve guides\u003c\/strong\u003e are installed to improve durability and longevity in demanding diesel engine environments. These guides are \u003cstrong\u003eheat treated to Rockwell 22 “C” scale\u003c\/strong\u003e, delivering exceptional wear resistance that exceeds many factory materials, including bronze.\u003c\/p\u003e\n\u003cp\u003eEach valve guide also features a \u003cstrong\u003eprecision spiral groove\u003c\/strong\u003e designed to retain oil and improve valve stem lubrication during engine operation.\u003c\/p\u003e\n\u003ch2\u003ePrecision Diamond Honed Valve Guides\u003c\/h2\u003e\n\u003cp\u003eInstead of traditional reaming, the valve guides are \u003cstrong\u003eprecision honed using diamond abrasives\u003c\/strong\u003e. Diamond honing ensures consistent accuracy across every cylinder head.\u003c\/p\u003e\n\u003cp\u003eThis process provides:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExact valve guide sizing\u003c\/li\u003e\n\u003cli\u003eConsistent bore geometry\u003c\/li\u003e\n\u003cli\u003eSmooth internal surface finish\u003c\/li\u003e\n\u003cli\u003eImproved valve alignment and longevity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach guide is verified using a \u003cstrong\u003evalve guide bore gauge\u003c\/strong\u003e to ensure proper tolerances.\u003c\/p\u003e\n\u003ch2\u003eMulti-Angle Performance Valve Job\u003c\/h2\u003e\n\u003cp\u003eTo improve airflow and combustion efficiency, the cylinder head receives a \u003cstrong\u003eprecision multi-angle valve job\u003c\/strong\u003e using a \u003cstrong\u003eSerdi 100 guide and seat machine\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe Serdi system uses a \u003cstrong\u003esolid carbide straight shank pilot\u003c\/strong\u003e inserted into the valve guide to simulate the valve stem during machining. This process ensures perfect alignment between the \u003cstrong\u003evalve seat and valve face\u003c\/strong\u003e, creating an optimal seal and maximizing airflow in and out of the cylinder head.\u003c\/p\u003e\n\u003ch2\u003ePrecision Cylinder Head Surfacing\u003c\/h2\u003e\n\u003cp\u003eEach cylinder head is resurfaced using \u003cstrong\u003eCBN or diamond tooling\u003c\/strong\u003e on a \u003cstrong\u003eBerco milling machine\u003c\/strong\u003e. This machining process restores a perfectly flat sealing surface and allows technicians to control the finish based on the head gasket being used.\u003c\/p\u003e\n\u003cp\u003eFor example, \u003cstrong\u003eMLS (Multi-Layer Steel) head gaskets\u003c\/strong\u003e require an extremely smooth surface finish to ensure proper sealing in high-pressure diesel engines.\u003c\/p\u003e\n\u003ch2\u003eFinal Assembly\u003c\/h2\u003e\n\u003cp\u003eOnce all machining processes are complete, the cylinder head is:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJet washed again for final cleaning\u003c\/li\u003e\n\u003cli\u003eThoroughly dried\u003c\/li\u003e\n\u003cli\u003eAssembled with \u003cstrong\u003enew valve seals\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eEquipped with \u003cstrong\u003enew performance valve springs\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe result is a \u003cstrong\u003ehigh-quality remanufactured diesel cylinder head\u003c\/strong\u003e built for dependable performance in demanding \u003cstrong\u003eCummins engine applications\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Industrial Injection","offers":[{"title":"Default Title","offer_id":53107529875821,"sku":"IIS-PDM-59STKH-FR","price":2500.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/Industrial_Injection_Premium_Stock_Plus_PDM-59STKH-FR_1.jpg?v=1773168888","url":"https:\/\/dieselpowerproducts.com\/products\/industrial-injection-premium-stock-plus-cylinder-head-with-fire-rings-03-07-ram-5-9l-cummins","provider":"Diesel Power Products","version":"1.0","type":"link"}