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ProMaxx FOR85XN Replacement Cylinder Head
★★★★★
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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.
Shipping Restrictions Apply 
Vehicle Fitment
| YEAR | MAKE | FOR ENGINE SERIES |
|---|---|---|
| 2003 | Ford | 6.0L Powerstroke |
| 2004 | Ford | 6.0L Powerstroke |
| 2005 | Ford | 6.0L Powerstroke |
| 2006 | Ford | 6.0L Powerstroke |
| 2007 | Ford | 6.0L Powerstroke |
Product Options
| PART NUMBER | MODEL YEAR |
|---|---|
| FOR850N | 03-05 (18mm) (8mm Rocker Carrier Bolts) |
| FOR851N | 06-07 (20mm) (10mm Rocker Carrier Bolts) |
Specifications
- ID 17894
- Manufacturer Name ProMaxx Performance
- Shipping Weight 75.00 lb.
- Fuel Type Diesel
- Warranty Info 1 Year Limited
-
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
- Internal LR
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Reviews
★★★★★
4.4/5 Stars out of 7 Reviews
0
1
0
1
5
Tim (LA) | May 7th, 2023
Awesome service!
William (Alturas) | September 11th, 2021
I've given them a four star rating only because I don't have an extended number of miles on them yet. However, I was able to order these in a time crunch and have them delivered in two days. That allowed me to stay on schedule. That was actually pretty amazing. Next, they were packaged well, and they installed perfectly with the new ARP studs. I had not one glitch with anything. Nothing I saw indicated anything less than a perfect replacement for a time sensitive engine repair where I could not afford to wait n having my originals checked out and remanufactured. Fast forward, two days after I buttoned the engine back up, I hooked up to a 10,000 lb trailer and towed 2500 miles. As of now, I'm probably 3500 miles past the installation and initial fire up on these heads, and they are performing exactly like the originals did. What more could I expect? I'll let you know in another 200,000 miles if they hold up as well as the originals did.
Christian (Rhode Island) | July 13th, 2021
about 15k on them. No issues
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Questions and Answers
Are these sold as a pair or is this per head?
View Staff Answer
Answer
Sold Individually
Sold Individually
Who is the manufacturer of the head?
View Staff Answer
Answer
ProMaxx Performance out of Rainbow City AL.
Does the new cylinder head come with gaskets?
View Staff Answer
Answer
Gaskets are not included.
Gaskets are not included.
Do they come fire ringed?
View Staff Answer
Answer
The ProMaxx FOR85XN Replacement Cylinder Head are a direct replacement of your factory heads and do not offer any performance upgrade options.
Do the studs come installed?
View Staff Answer
Answer
The ProMaxx FOR85XN is a replacement cylinder head and does not include bolts nor studs.
stock valve springs? are the valve springs stock or heavy duty for more power
View Staff Answer
Answer
The PROMAXX FOR85XN REPLACEMENT CYLINDER HEAD will include stock valve springs.
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