Industrial Injection Stage 1 Ported and Polished Cylinder Head With Fire Rings 24-Valve 98.5-02 Ram 5.9L Cummins

Is our 24-Valve Cummins prepared for the aftermarket installs you have planned? Industrial Injection's Stage 1 Ported and Polished Cylinder Head With Fire Rings is a great way to get the fire rings seal that allows your engine to handle the higher pressures your combustion chamber can produce when you add higher performance injectors or fuel systems. On top of that, these Cylinder Heads have gone through a porting process that gives unparalleled accuracy to head porting with each port flowing the same. This helps balance the power that each cylinder produces, making tuning easier. If you are looking to unleash the maximum your Cummins can do this cylinder head is for you. NOTE: Fire Ring Gasket sold separately. Installation of a fire ring gasket requires high yield head studs to ensure proper seat of the head to the cylinder block. The Industrial Injection 5.9L 24-Valve Performance Cylinder Head is engineered for diesel enthusiasts who demand increased airflow, durability, and performance from their 5.9 Cummins engine. Designed as a high-performance upgrade over stock cylinder heads, this head provides improved combustion efficiency and reliability for trucks used for towing, street performance, and moderate horsepower builds. Each cylinder head is precision machined and assembled with upgraded valvetrain components and high-strength materials to ensure consistent performance under demanding diesel engine conditions. Built by Industrial Injection, a trusted name in high-performance diesel engine components, this head delivers the durability and airflow improvements needed to support increased boost and fueling levels. Performance-Focused Design This 24-valve Cummins performance head is designed to improve airflow through optimized machining and upgraded internal components. Increased airflow helps support improved throttle response, more efficient combustion, and lower exhaust gas temperatures (EGTs), which are critical for performance diesel engines. Whether you're rebuilding your engine or upgrading from a factory cylinder head, the Industrial Injection performance head provides the strength and reliability needed for demanding diesel applications. Built for Reliability and Performance Industrial Injection builds every 5.9 Cummins performance cylinder head using strict machining standards and upgraded materials to meet the demands of modern diesel performance. This head is ideal for trucks used for: Daily driving and towing Diesel performance builds Engine rebuilds and upgrades Moderate horsepower and boost increases The result is a cylinder head that provides a balance of factory-level reliability and improved performance capability for the legendary 5.9L Cummins platform.