Industrial Injection Stage 1 Ported and Polished Cylinder Head With Fire Rings 07.5-18 Ram 6.7L Cummins

If you are rebuilding a 6.7L Cummins and plan on using some aftermarket upgrades, you need an engine that can handle the extra power you have planned. Get cylinder heads that are built for performance with Industrial Injection's Stage 1 Ported and Polished Cylinder Head With Fire Rings. These cylinder heads are what you need to make sure your engine is ready to push it's limits. NOTE: Installation of a fire ring gasket requires high yield head studs to ensure proper seat of the head to the cylinder block. Unlock the full performance potential of your diesel engine with the Industrial Injection 6.7L Cummins Performance Cylinder Head. Designed for Ram 2500 and Ram 3500 trucks equipped with the 6.7L Cummins engine, this upgraded cylinder head features precision CNC porting, high-performance valvetrain components, and fire ring groove machining to handle higher boost levels and increased combustion pressure. Each cylinder head is thoroughly inspected, cleaned, and precision-machined before assembly. The ports are developed using a SuperFlow flow bench and then machined with a 5-axis CNC cylinder head porting machine to ensure consistent airflow across all cylinders. This process helps balance cylinder power, improve airflow efficiency, and support higher horsepower applications. Precision CNC Porting for Maximum Airflow The performance gains of this Cummins cylinder head come from its CNC ported intake and exhaust runners. Using advanced CAD/CAM software and a 5-axis machining process ensures that every port flows evenly, which improves engine balance and overall efficiency. After the CNC process is complete, each port is hand blended to optimize airflow and maintain proper casting thickness for long-term durability. Unlike aggressive porting methods that sacrifice casting strength, Industrial Injection engineers carefully balance airflow gains with structural integrity. This helps prevent cracking caused by the extreme thermal stress often found in high-performance diesel engines. Built for High Boost Cummins Builds This ported 6.7 Cummins cylinder head is ideal for trucks running upgraded turbos, injectors, and fueling systems. The improved airflow supports higher horsepower levels while the upgraded valves, guides, and valve seats help ensure long-term durability in demanding diesel performance applications.