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ProMaxx Performance CHR621N

Cylinder Head Cummins 6.7L 24V #7225 #7221 Diesel Common Rail Assembled

ProMaxx Performance CHR621N

723-CHR621N NEW

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ProMaxx Performance CHR621N Cylinder Head Cummins 6.7L 24V #7225 #7221 Diesel Common Rail Assembled $1,390.99
Cylinder Head
  • Cummins 6.7L 24-Valve Diesel - Common Rail
  • Casting Number 3977225 / 3977221
  • 2007.5-2017 Dodge Pickup
  • Assembled
  • Sold Individually, 1/Pkg.

  • ProMaxx Performance CHR621N Details

    Note: This cylinder head is casting specific, not model year specific. Be sure to confirm the casting number on the cylinder head you currently have to confirm fitment before ordering.

    ProMaxx Performance has the answer for the epidemic of cracked Cummins 6.7L cylinder heads. They have developed and designed this new cylinder head from the OE casting but improved the casting strength and thickness in all the crack prone areas. This is a direct bolt-on cast iron cylinder head that replaces your difficult to access fractured factory cylinder heads. This head is available as a fully machined bare casting or fully assembled and pressure checked!


    • New Castings Are Thicker Than OEM
    • Improved Casting In ''Problem Areas''
    • Assembled Head Features New Components: Springs, Valves, Retainers, Locks, Etc.
    • Assembled Heads Come Ready To Bolt On

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