Description

The PDM-67RHS3 is Industrial Injection's Stage 4 race head for the 2007.5-2018 6.7L Cummins — the top of the race head ladder. Fully CNC-ported with fire ring grooves, custom-port oversized 34mm valves, and concrete-filled water jackets to reinforce the deck against extreme cylinder pressure. Built for sled pullers and racers where head deformation is the limiting factor.

Part Number: PDM-67RHS3

Features

• Stage 4 race head — concrete-filled
• 5-axis CNC porting on intake and exhaust ports
• Fire ring grooves machined into the deck surface
• Custom-port oversized 34mm stainless steel valves
• Unshrouded valves
• Diamond-honed high-strength alloy heat-treated iron-based valve guides
• Premium nickel-based non-magnetic valve seat inserts
• Multi-angle valve job
• 120lb performance valve springs
• Milled off intake to accept ZZ Fab side runner

Notes

• 34mm valves will not clear a 5.9 bore — must have a 6.4 or 6.7 bore to clear.
• Filled water jackets are intended for competition use only — not for street.
• Designed to run with a fire ring head gasket — confirm gasket and stud package before ordering.
• Head studs and head gasket sold separately.