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ProMaxx FOR85XN Replacement Cylinder Head - 03-05 (18MM) (8MM Rocker Carrier Bolts)

Thoroughbred Sku #: PMPFOR850N
Manufacturer Sku #: FOR850N

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$1,186.00

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Product Details

Product Name: Replacement Cylinder Head (18MM) (8MM Rocker Carrier Bolts)
Manufacturer: ProMaxx Performance
Manufacture Part #: FOR850N
Thoroughbred Diesel Part #: PMPFOR850N
Fitment Notes: 2003-2005 Ford Powerstroke 6.0L

ProMaxx Performance has the answer for the epidemic of cracked Ford 6.0L 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. The ProMaxx casting features hardened seats and true press-in guides instead of the ‘cut into’ like the factory ford head. This head is available as a fully machined bare casting or fully assembled and pressure checked to 60 psi!

The ProMaxx Performance Cylinder Heads are high quality replacements for your Ford 6.0L Powerstroke. Built with thicker castings in crack prone areas, these heads undergo extensive testing and quality control to ensure that you receive the best product possible.

ProMaxx performs the following tests and procedures: All fuel rails are drilled and checked, All heads are push rod clearanced, glow plugs and injectors are test fit, all recession depths are checked, all heads are pressure tested, all holes are tapped including glow plug threads and each head gets an in-house valve job.

Sold individually 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
  • Available For 18MM & 20MM Dowels
  • No Core Charge!
  • Sold Individually

Note: Model year ranges are suggested applications. Please confirm dowel size on your truck before ordering.


Reviews

  • I’m assuming these have o rings?? Also, I see older reviews on powerstroke forums with hit and miss reviews. It looks like you guys have tweaked the casting over the years to improve the quality. When was the last time you guys made design changes/improvements and what improvements have you made. Looking for heads for my 2004 Ford F-250 powerstroke 6.0l Diesel

    Dave | 2/10/2021

    Old individually 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.  Casting process in constant testing and review.

  • what is the warranty on these heads and does it have any labor coverage

    jonathan chavez | 4/9/2020

    These heads have a 3 month warranty and Promaxx does not cover labor.