Description

The Industrial Injection PDM-59CRRH is a Stage 1 fully CNC-ported cylinder head for the 2003-2007 5.9L Common Rail Cummins, built for racing and sled-pulling use. Ports are cut on a 5-axis CNC with CAD/CAM software and then hand-blended, giving each runner identical flow for cleaner tuning and balanced cylinder power. The head ships complete with upgraded stainless valves, heat-treated iron valve guides, premium nickel-based seats, a radius-cut steel fire ring, drilled-and-tapped steel freeze plugs, and 120 lb performance valve springs.

Features

• Stage 1 fully CNC-ported with 5-axis CAD/CAM tooling
• Hand-blended ports for matched cylinder-to-cylinder flow
• Upgraded stainless steel valves with nitrate coating
• Heat-treated iron-based valve guides, Rockwell 22 C, spiral-grooved for oil retention
• Premium nickel-based non-magnetic valve seats
• Radius-cut steel fire ring to reduce head gasket failures
• Drilled and tapped steel coolant freeze plugs (no press-in aluminum)
• 120 lb performance valve springs

Notes

• Intake runner is milled to accept a ZZ Fab intake (sold separately)
• Core deposit required — see core charge product at checkout