{"title":"Choate | Cylinder Heads for XCMG","description":"","products":[{"product_id":"xcmg-xe210-xe300-series-cylinder-head-daily-driver","title":"XCMG XE210 - XE300 Series Excavator Cylinder Head Reman - Daily Driver (6.7L)","description":"\u003cp\u003e\u003cb\u003eDirect Fit For XCMG Excavator Models:\u003c\/b\u003e \u003cb\u003eXE210U, XE210UCA, XE215U, XE225U, XE235UCR, XE245UCR, XE250U, XE300U, and XE215D\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eRestore factory-level digging power, fuel efficiency, and cycle times to your XCMG crawler excavator. The Daily Driver tier offers a dependable, premium OEM-spec replacement cylinder head engineered specifically for the industrial Cummins 6.7L engine (B6.7\/QSB6.7). Assembled using a renewed, pressure-tested OEM core combined with brand-new, high-quality internal components, this cylinder head guarantees reliable operation, proper compression sealing, and extensive service life on the job site. It is the ideal choice for routine fleet maintenance and cost-effective engine overhauls, correcting inherent factory casting stresses to minimize unexpected field downtime.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eComponents and Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRemanufactured Casting:\u003c\/b\u003e Built from a high-quality OEM core casting that has passed rigorous diagnostic testing and is machined to like-new industrial specifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNew Valves:\u003c\/b\u003e Equipped with all-new, high-quality intake and exhaust valves that are strictly inspected for proper seating, depth, and face clearance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNew Valve Springs and Retainers:\u003c\/b\u003e Utilizes brand-new valve springs matched precisely to the high-torque, low-RPM demands of heavy excavation, featuring durable retainers and locks for secure operation under continuous hydraulic system loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNew Injector Cups:\u003c\/b\u003e Pre-installed new injector cups ensure an absolute fuel and coolant seal to prevent internal fluid contamination.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eKey Features and Heavy-Duty Fixes\u003c\/h3\u003e\n\u003cp\u003eThis modern 6.7L head features critical durability updates, backed by an intense inspection protocol to guarantee every commercial specification is met.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e40 PSI Pressure Testing:\u003c\/b\u003e After all machining work is completed, every cylinder head is pressure-tested at 40 PSI to confirm zero structural leaks and ensure absolute casting integrity before it ever reaches your machine.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBlow-Proof Plugs:\u003c\/b\u003e Threaded, blow-proof plugs are installed in the top of the head for increased security and leak prevention, replacing standard factory pressed-in freeze plugs that are prone to popping out during severe thermal expansion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFinal Quality Control:\u003c\/b\u003e The head undergoes a comprehensive final cleaning and strict inspection process. A detailed sign-off sheet is generated, measuring and recording critical specifications using a profilometer, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eValve Recessions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStem Heights\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstalled Spring Heights\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpring Pressures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKeeper and Lock Positions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRoughness Average (RA) Surface Finish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cem\u003eRecording This rigorous validation process ensures you receive a cylinder head that is significantly improved over the original factory design and ready for years of demanding excavator operation.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e \u003c\/p\u003e\n\u003ch3\u003ePrecision Machining Process\u003c\/h3\u003e\n\u003cp\u003eChoate Engineering Performance has incorporated critical modifications to address common failure points of factory 6.7L Cummins cylinder heads, drastically improving field reliability:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOptimal Sealing Surface:\u003c\/b\u003e The deck is resurfaced to meet or exceed OEM specifications for Roughness Average (Ra), maximizing the sealing surface performance for the head gasket under high-pressure common rail injection loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eValve Train Geometry Alteration:\u003c\/b\u003e We custom blueprint the 6.7L head to alter valve height and valve recession, achieving maximum reliability for high-cycle excavator applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eLifter and Crosshead Longevity Fix:\u003c\/b\u003e Valve stem heights are precisely altered to optimize geometry and remove excessive preload on the hydraulic lifter. This crucial modification decreases wear and significantly extends the life of the lifters, crossheads, and camshaft under constant high hydraulic demands.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOptimized Flow and Sealing:\u003c\/b\u003e Valve seats are cut with a precise three-angle profile to optimize engine efficiency and ensure an airtight seal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eValve Prep:\u003c\/b\u003e Valves are reground and margins are meticulously inspected to guarantee proper sealing against the new seats.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAll-New Wear Components:\u003c\/b\u003e New valve stem seals, valve seats, valve guides, and injector cups are installed across the entire assembly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMeticulous Cleaning and Prep Process\u003c\/h3\u003e\n\u003cp\u003eOur commitment to quality begins before machining, with an intensive cleaning and stress-relieving process to ensure a flawless starting point:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRigorous Inspection (MPI):\u003c\/b\u003e Each core is subjected to Magnetic Particle Inspection (MPI) to thoroughly check for any cracks or subsurface imperfections common in high-hour castings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eThermal Stress Relieving:\u003c\/b\u003e The head undergoes a stress-relieving process in a specialized furnace to eliminate residual industrial oils and grease by turning them into ash.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMaterial Relaxation:\u003c\/b\u003e The head is shot-blasted to strip away rust and scaling. This crucial step relaxes the cast iron material before precision machining begins.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eThread Prep:\u003c\/b\u003e All broken factory bolts and studs are professionally removed to ensure threads are clean, chased, and ready for an effortless installation on your machine.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Choate Performance","offers":[{"title":"Default Title","offer_id":67304221966640,"sku":"CEPXCMGDHR","price":1799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/2680\/1200\/files\/6.7CumminsDDCylinderHead.png?v=1783558046"},{"product_id":"xcmg-xe210-xe300-series-cylinder-head-workhorse","title":"XCMG XE210 - XE300 Series Excavator Cylinder Head Reman - Workhorse (6.7L)","description":"\u003cp\u003e\u003cb\u003eDirect Fit For XCMG Excavator Models:\u003c\/b\u003e \u003cb\u003eXE210U, XE210UCA, XE215U, XE225U, XE235UCR, XE245UCR, XE250U, XE300U, and XE215D\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eMaximize machine availability and protect your equipment against head gasket failures during punishing excavation operations. The Workhorse tier cylinder head for XCMG XE210 through XE300 series crawler excavators is engineered specifically to handle continuous heavy-duty digging cycles, severe thermal loads, and relentless hydraulic system pressure. Assembled using a renewed, pressure-tested OEM core combined with brand-new, premium internal components, this cylinder head integrates heavy-duty structural upgrades to handle elevated cylinder pressures and eliminate common field failures on the job site.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eUpgrades Over the Daily Driver: Precision O-Rings\u003c\/h3\u003e\n\u003cp\u003eHeavy excavation and demolition work generate intense internal heat and rapid thermal cycles, which are the leading causes of head gasket blowouts in production machinery. The Workhorse model eliminates this vulnerability by featuring precision-cut O-rings machined directly into the deck surface. This mechanical modification locks the head gasket securely in place, drastically improving sealing under high cylinder pressures and severe operating temperatures to guarantee zero combustion leaks and prevent costly operational downtime.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eComponents and Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRemanufactured Casting:\u003c\/b\u003e Built from a high-quality OEM core casting that has passed rigorous diagnostic testing and is machined to like-new industrial specifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNew Valves:\u003c\/b\u003e Equipped with all-new, high-quality intake and exhaust valves, meticulously inspected for proper seating, depth, and face clearance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNew Valve Springs and Retainers:\u003c\/b\u003e Utilizes brand-new valve springs matched precisely to the high-torque, low-RPM demands of heavy excavation, featuring durable retainers and locks to secure operation during prolonged full-load hydraulic pump cycling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNew Injector Cups:\u003c\/b\u003e Pre-installed new injector cups provide an absolute fuel and coolant seal to prevent internal fluid contamination.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eKey Features and Heavy-Duty Fixes\u003c\/h3\u003e\n\u003cp\u003eThis industrial-grade head features critical durability updates, backed by an intense inspection protocol to guarantee every commercial specification is met.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e40 PSI Pressure Testing:\u003c\/b\u003e Following all machining work, every cylinder head is pressure-tested at 40 PSI to confirm zero leaks and ensure complete casting integrity before it ever reaches your machine.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBlow-Proof Plugs:\u003c\/b\u003e Threaded, blow-proof plugs are installed in the top of the head for superior leak prevention, replacing standard factory pressed-in plugs that are prone to failure during severe thermal cycles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFinal Quality Control:\u003c\/b\u003e The head undergoes an extensive final cleaning and strict inspection process. A detailed sign-off sheet is generated, measuring and recording critical specifications using a profilometer, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eValve Recessions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStem Heights\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstalled Spring Heights\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpring Pressures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKeeper and Lock Positions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRoughness Average (RA) Surface Finish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cem\u003eRecording This rigorous validation process ensures you receive a cylinder head that is significantly improved over the original factory design and ready for years of demanding excavator operation.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e \u003c\/p\u003e\n\u003ch3\u003ePrecision Machining Process\u003c\/h3\u003e\n\u003cp\u003eChoate Engineering Performance has incorporated critical modifications to address common failure points of factory 6.7L Cummins cylinder heads, drastically improving field reliability:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOptimal Sealing Surface:\u003c\/b\u003e The deck is resurfaced to meet or exceed OEM specifications for Roughness Average (Ra), maximizing the sealing surface performance for the head gasket under high-pressure common rail injection loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eValve Train Geometry Alteration:\u003c\/b\u003e We custom blueprint the 6.7L head to alter valve height and valve recession, achieving maximum durability for high-cycle excavator applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eLifter and Crosshead Longevity Fix:\u003c\/b\u003e Valve stem heights are precisely altered to optimize geometry and remove excessive preload on the hydraulic lifter. This crucial modification decreases wear and significantly extends the life of the lifters, crossheads, and camshaft under constant high hydraulic demands.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOptimized Flow and Sealing:\u003c\/b\u003e Valve seats are cut with a precise three-angle profile to optimize combustion efficiency and ensure a perfect seal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eValve Prep:\u003c\/b\u003e Valves are reground and margins are meticulously inspected to guarantee proper sealing against the new seats.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAll-New Wear Components:\u003c\/b\u003e New valve stem seals, valve seats, valve guides, and injector cups are installed across the entire assembly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMeticulous Cleaning and Prep Process\u003c\/h3\u003e\n\u003cp\u003eOur commitment to quality begins before machining, with an intensive cleaning and stress-relieving process to ensure a flawless starting point:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRigorous Inspection (MPI):\u003c\/b\u003e Each core is subjected to Magnetic Particle Inspection (MPI) to thoroughly check for any cracks or subsurface imperfections common in high-hour castings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eThermal Stress Relieving:\u003c\/b\u003e The head undergoes a stress-relieving process in a specialized furnace to bake away residual industrial oils and grease by turning them into ash.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMaterial Relaxation:\u003c\/b\u003e The head is shot-blasted to strip rust and scale, a crucial step that relaxes the cast iron before any precision machining begins.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eThread Prep:\u003c\/b\u003e All broken factory bolts and studs are professionally removed to ensure threads are clean, chased, and ready for a seamless installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Choate Performance","offers":[{"title":"Default Title","offer_id":67304222359856,"sku":"CEPXCMGWHR","price":2350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/2680\/1200\/files\/6.7CumminsWHCylinderHead_2.png?v=1783558571"},{"product_id":"xcmg-xe210-xe300-series-cylinder-head-workhorse-plus","title":"XCMG XE210 - XE300 Series Excavator Cylinder Head Reman - Workhorse Plus (6.7L)","description":"\u003cp\u003e\u003cb\u003eDirect Fit For XCMG Excavator Models:\u003c\/b\u003e \u003cb\u003eXE210U, XE210UCA, XE215U, XE225U, XE235UCR, XE245UCR, XE250U, XE300U, and XE215D\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eEliminate head gasket vulnerabilities and valvetrain fatigue under the absolute most punishing industrial workloads. The Workhorse Plus tier cylinder head for XCMG XE210 through XE300 series crawler excavators is engineered specifically for severe-duty applications, such as high-impact rock breaking, deep trenching, and continuous extreme-duty earthmoving, where equipment breakdown and job site downtime are completely cost-prohibitive. Assembled using a renewed, pressure-tested OEM core and premium internal components, this top-tier cylinder head features extreme-duty structural upgrades to handle maximum cylinder pressures, intense thermal expansion, and continuous peak-torque demands.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eUpgrades Over the Workhorse Tier: Heavy-Duty Valve Springs\u003c\/h3\u003e\n\u003cp\u003eWhile the Workhorse tier introduces a critical O-ringed deck, the Workhorse Plus upgrades the entire assembly with premium, heavy-duty valve springs and reinforced retainers. This severe-duty valvetrain package prevents valve float and spring fatigue during prolonged peak-torque operation, easily managing the extreme cylinder pressures and elevated exhaust backpressures common in modern heavy excavator turbocharger and emissions configurations. The result is absolute valvetrain stability and precise tracking when your excavator is working at maximum capacity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eComponents and Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRemanufactured Casting:\u003c\/b\u003e Built from a premium OEM core casting that has undergone rigorous diagnostic testing and is machined to like-new industrial specifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePrecision O-Rings:\u003c\/b\u003e To combat the severe thermal expansion common in modern high-torque heavy equipment, precision O-rings are machined directly into the deck surface. This mechanical modification locks the head gasket securely in place, completely eliminating the risk of combustion leaks under extreme operating loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNew Valves:\u003c\/b\u003e Equipped with all-new, high-quality intake and exhaust valves, verified for precise seating and clearance against the seats.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNew Injector Cups:\u003c\/b\u003e Pre-installed new injector cups ensure a permanent, air-tight fuel seal and eliminate the threat of internal coolant contamination.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eKey Features and Heavy-Duty Fixes\u003c\/h3\u003e\n\u003cp\u003eThis severe-duty head features key structural upgrades, backed by an intense inspection protocol to guarantee every critical industrial metric is met.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e40 PSI Pressure Testing:\u003c\/b\u003e Following the machining process, every cylinder head is pressure-tested at 40 PSI to verify zero structural leaks and absolute casting integrity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBlow-Proof Plugs:\u003c\/b\u003e Threaded, blow-proof plugs are installed into the top of the head for superior safety, replacing factory pressed-in freeze plugs that regularly fail during severe thermal spikes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFinal Quality Control:\u003c\/b\u003e The head undergoes a meticulous final cleaning and rigorous quality control checking. A comprehensive specification sheet is generated, using a profilometer to record critical specifications including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eValve Recessions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStem Heights\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstalled Spring Heights\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpring Pressures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKeeper and Lock Positions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRoughness Average (RA) Surface Finish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cem\u003eRecording this rigorous process ensures you receive a head that is significantly improved over the original and ready for years of demanding, heavy industrial operation.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e \u003c\/p\u003e\n\u003ch3\u003ePrecision Machining Process\u003c\/h3\u003e\n\u003cp\u003eChoate Engineering Performance incorporates structural updates to resolve common factory vulnerabilities of the 6.7L Cummins industrial cylinder head, significantly extending operational lifespan:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOptimal Sealing Surface:\u003c\/b\u003e The deck is resurfaced to strictly meet or exceed OEM specifications for Roughness Average (Ra), maximizing the sealing surface performance for the head gasket under high common-rail injection pressures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eValve Train Geometry Alteration:\u003c\/b\u003e The head is custom blueprinted to adjust valve height and valve recession, optimizing geometry for high-stress industrial applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eLifter and Crosshead Longevity Fix:\u003c\/b\u003e Valve stem heights are precisely machined to remove excessive preload on the lifters, a critical adjustment that dramatically reduces wear and extends the service life of the bridges, crossheads, lifters, and camshaft under constant hydraulic load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOptimized Flow and Sealing:\u003c\/b\u003e Valve seats are cut with an industrial three-angle profile to optimize engine efficiency and ensure an airtight seal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eValve Prep:\u003c\/b\u003e Valves are reground and margins are meticulously inspected to guarantee proper sealing against the new seats.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAll-New Wear Parts:\u003c\/b\u003e New valve stem seals, valve seats, valve guides, and injector cups are installed across the entire assembly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMeticulous Cleaning and Prep Process\u003c\/h3\u003e\n\u003cp\u003eOur manufacturing protocol begins with an intensive cleaning and stress-relieving process to ensure a flawless casting:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRigorous Inspection (MPI):\u003c\/b\u003e Every single core is subjected to Magnetic Particle Inspection (MPI) to scan for microscopic cracks or subsurface structural imperfections common in high-hour castings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eThermal Stress Relieving:\u003c\/b\u003e Castings undergo a thermal baking process in a specialized furnace to eliminate residual industrial oils and grease by converting them to ash.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMaterial Relaxation:\u003c\/b\u003e The head is shot-blasted to strip away rust and scale. This vital step relaxes the cast iron before any precision machining takes place.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eThread Restoration:\u003c\/b\u003e All broken factory bolts and studs are professionally removed, leaving all holes clean, chased, and ready for a seamless installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Choate Performance","offers":[{"title":"Default Title","offer_id":67304222556464,"sku":"CEPXCMGWPHR","price":3150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/2680\/1200\/files\/6.7CumminsWHCylinderHead_2.png?v=1783558571"}],"url":"https:\/\/choateperformance.com\/collections\/choate-cylinder-heads-for-xcmg.oembed","provider":"choateperformance","version":"1.0","type":"link"}