4730101420 Detroit DD15 Cylinder Head Inconel Intake & Exhaust Valves CGI

Advantages of JAK's Performance Detroit Diesel DD15 Cylinder Head with CGI Elevate your engine's performance with JAK's premium DD15 cylinder head, crafted with cutting-edge Compacted Graphite Iron (CGI) casting to exceed OEM standards. The CGI material, enhanced with 5% additional nickel content, prevents cracking between the valves while offering 75% greater tensile strength , 45% higher stiffness , and double the fatigue resistance compared to traditional gray iron. With 30% larger coolant passages and reinforced internal ribs, this head minimizes thermal stress for superior durability and improved thermal conductivity, supporting higher cylinder pressures for better fuel efficiency and power output. If you've faced costly downtime from a cracked cylinder head, avoid unreliable remanufactured OEM heads. Choose JAK's enhanced performance head for worry-free reliability on long hauls. This head is compatible with ESN prefixes: 472903S, 472904S, 472905S, 472906S, 472907S, 472908S. What Defines This Enhanced Performance Head? This performance cylinder head surpasses standard designs with advanced CGI casting and Inconel exhaust valves . These high-performance valves withstand extreme temperatures and pressures, eliminating the common issue of valve fracturing in high-horsepower applications. With exceptional resistance to heat, corrosion, pitting, and cracking, this head ensures your engine delivers maximum power and long-term reliability. Perfect for operators seeking top-tier performance and durability in demanding conditions, JAK's DD15 cylinder head with CGI is the ultimate upgrade. Note: Any references to OEM names, product IDs, descriptions, or model numbers are used solely for identification purposes and do not imply that this is an OEM part.