ProMaxx CHE855N Replacement Cylinder Head

GM 6.5L Diesel (Standard Head)
ProMaxx Performance
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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. Sold individually. 


  • New Casting 
  • Improved Casting In "Problem Areas" 
  • Includes Valve Seals, Springs
  • No Core Charge! 
  • Sold Individually 
Note: The standard heads will typically use a 1-piece intake and are normally found in truck applications. Please confirm what is in your vehicle before ordering.

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