Skip to content

6.4L Head Loaded HD Valve springs O-Ringed


This is the head for those people who only want to do the job one time, O-Ring provides a positive seal around the cylinder keeping compression in the cylinder not in you cooling system. The springs control the valve train when you have upgraded turbos, injectors and tuning. used in conjunction with head studs these are the answer to the most common problems with the 6.4L. Do Not Use Fel-Pro Gaskets with the O-Ringed Heads they will not work and will cause you nothing but grief and will void your warranty.

These heads come with a one year unlimited mileage warranty from the date of purchase.