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2007.5+ Dodge 6.7L Cummins (#3977225 - #3977221) ProMaxx CHR621N Replacement Cylinder Head

2007.5+ Dodge 6.7L Cummins (#3977225 - #3977221) ProMaxx CHR621N Replacement Cylinder Head

ProMaxx Performance Cylinder Heads are designed as replacement cylinder heads with thicker castings in crack prone areas. Sold as a complete cylinder head with valves, valve seals, springs, retainers and locks, these new castings are sold without a core charge and come ready to install.

Features:
  • New Casting
  • Improved Casting In "Problem Areas"
  • No Core Charge!
Application Notes:
Fits casting numbers #3977225 - #3977221