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 D&J Precision Machine, this cylinder head is a proven upgrade for both stock and performance-driven Cummins builds.
Details:
- Engine Manufacture: Cummins
- Liter: 5.9 Liter
- Ems Code: 3
- Engine Years: 2003-2007
- Fits: 2003-2007 Dodge Ram 2500/3500
- Shipping Restriction: Not for sale on licensed California vehicles
- Sold As: Each
- Warranty: 12-Months