Description
The 2003-2007 5.9 Stage 1 Cummins Performance Cylinder Head is designed to deliver increased airflow and durability without the added cost and complexity of an aftermarket intake.
Featuring 105-pound valve springs and a 5-axis CNC port job, this head significantly boosts intake flow from 155 CFM to 220 CFM, improving low-end performance, reducing boost pressure, and lowering EGTs.
Built on the foundation of the HP Reman Head, it includes new bronze guides, oversized hardened seats, and a high-performance CNC valve job for enhanced longevity and efficiency. Manufactured by DandJ Precision Machine, this cylinder head is a proven upgrade for both stock and performance-driven Cummins builds.
Warranty:
Parts
12-Months
Labor
12-Months
Note:
Not for sale on licensed California vehicles
Features:
- 5-Axis CNC Ported for Increased Flow – Intake flow increased from 155 CFM to 220 CFM for improved efficiency and power
- 105-Pound Valve Springs – Enhances valve control to support higher boost and RPM. Factory Intake Plenum Retained – Simplifies installation while maximizing airflow gains
- Upgraded Hardened Valve Seats – Extra-large, heat-resistant seats prevent failure and extend durability
- Precision CNC Valve Job – Optimized for enhanced airflow and performance
- Thoroughly Remanufactured and Pressure Tested – Crack-checked, resurfaced, and assembled to exceed OEM standards
- Direct Bolt-On Replacement – Designed for 2003-2007 Dodge Cummins 5.9L engines
- Fully Assembled for Convenience – Includes new valve seals, soft plugs, and HD springs, ready for installation
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