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2007.5-2018 Cummins Stage 3 Ported & Polished Cylinder Head w/ Fire Ring Grooves (PDM-67RHS2)

Industrial Injection
Regular price $6,887.92 USD

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Description

The PDM-67RHS2 is Industrial Injection's Stage 3 race head for the 2007.5-2018 6.7L Cummins. On top of the Stage 1 race-spec internals, this head adds CNC-blended porting and polishing of the intake and exhaust ports plus machined fire ring grooves in the deck surface — built for high-cylinder-pressure builds running fire rings. CNC porting on a 5-axis machine takes the head to 285 CFM @ .450 lift (vs. 165 CFM stock), with each port flowing identically to balance cylinder-to-cylinder power.

Part Number: PDM-67RHS2

Features

  • Stage 3 race head — ported & polished
  • 5-axis CNC porting, hand-blended on intake and exhaust ports
  • 285 CFM @ .450 lift (stock is 165 CFM)
  • Custom-port oversized 36mm stainless steel valves with nitrate coating
  • Fire ring grooves machined into the deck surface
  • High-strength alloy heat-treated iron-based valve guides (Rockwell 22C), diamond-honed
  • Premium nickel-based non-magnetic valve seat inserts
  • 120lb performance valve springs (USA-made, in-house tested)
  • Drilled and tapped steel coolant freeze plugs
  • Milled and surfaced

Notes

  • 36mm valves will not clear a 5.9 bore — must have at least a 4.125 bore to clear.
  • Intake runner milled off to accept ZZ Fab intake (sold separately).
  • Designed to run with a fire ring head gasket — confirm gasket and stud package before ordering.
  • Head studs and head gasket sold separately.
  • Core deposit applies — keep your old head and return it to recover the deposit.

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