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ProMaxx FOR85XN Replacement 6.0L Cylinder Head
★★★★★
Vehicle Fitment For:
2003-2007 Ford 6.0L Powerstroke
See full application list below
FROM 1261.11
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Description
The ProMaxx Performance Cylinder Heads are high quality replacements for your 2003-2007 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. Sold individually.
Features:
- New Casting
- Sold Individually
- No Core Charge!
- Improved Casting In "Problem Areas"
- Available For 18MM & 20MM Dowels
Note: Model year ranges are suggested applications. Please confirm dowel size on your truck before ordering.
Manufacturer Warranty*:
1 Year Limited
1 Year Limited
Shipping Restrictions Apply 
Instructions & Tech Info
Installation Info
Recommended Specialty Tools
Product Options
| PART NUMBER | MODEL YEAR |
|---|---|
| FOR850N | 03-05 (18mm) (8mm Rocker Carrier Bolts) |
| FOR851N | 06-07 (20mm) (10mm Rocker Carrier Bolts) |
Reviews
Overall Rating
/5
7 Reviews
Verified Buyer
Head
Tim (LA) | May 7th, 2023
Awesome service!
Great product
Christian (Rhode Island) | July 13th, 2021
about 15k on them. No issues
Perfect replacement
Brad from BDR (IL) | October 17th, 2018
Don't let old reviews fool you. Quality has been achieved and I've been using these heads for over 2 years now with zero issues. Love them. And they are about $200 more expensive than getting an old set of heads done(Not to mention if the old ones aren't cracked)
So far so good!
Chad (Tucson AZ) | May 7th, 2018
I bought these heads over a year ago. I got 32,000 miles on them with 3 trips pulling my 14k toyhauler through the Arizona mountains in the dead of summer. I also pulled 25k through town with a small hill climb.
Great priduct
Buzbee auto repair (Bay minette al) | July 28th, 2015
Great craftsmanship and high quality .Very good upgrade over stock heads and very affordable
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Frequently Asked Questions
Do the new cylinder heads come with new injector cups installed?
Yes, the ProMaxx FOR85XN Replacement Cylinder Head for the Ford 6.0L’s come with new valves, seals, springs, retainers, locks and injector cups already installed.
What is the warranty on the heads?
You have a 1 Year Warranty on the heads.
Do these have valve guide inserts and what material copper or steel?
They come with a steel guide casted in the head (no liner).
Do these heads have hardened or thicker cast valve seat areas? Valve seat cracks are prominent ares of failures due to cracks. Is this one of the "problem areas" that have the heavier casting and are the seats hardened?
The ProMaxx FOR85XN Replacement Cylinder Heads have a hardened valve seats.
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Specifications
ID
17894
Manufacturer Name
ProMaxx Performance
Shipping Weight
75.00 lb.
Fuel Type
Diesel
Manufacturer Warranty*
1 Year Limited
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Internal
LR
ITEM ADDED TO CART
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Product prices marked with an * may require additonal fees, such as a core charge, which will be displayed in the cart.