The 2007-2018 6.7 Stage 1 24V Cummins Performance Cylinder Head is designed for those looking to boost airflow and performance while maintaining ease of installation with the factory intake plenum. This head builds on the foundation of the HP Reman Head, featuring 105-pound valve springs and a 5-axis CNC port job, increasing intake flow from 155 CFM to 220 CFM. The result is improved low-end performance, reduced boost pressure, and lower EGTs, allowing for greater fuel efficiency and increased power potential. The complete remanufactured assembly includes new bronze guides, oversized hardened seats, and a high-performance CNC valve job, ensuring reliability under demanding conditions. Manufactured by D&J Precision Machine, this head is a proven upgrade for performance-focused Cummins builds.