CHOATE 6.0 Cylinder Head Complete O-ring 18MM and 20MM
Manufacturer : Choate Engineering Performance
Fitment : 6.0 Powerstroke 2003, 2004, 2005, 2006, 2007
Sold as 1 Cylinder head. Add two to your cart if you need two.
Iron matrix valve guides are honed to size for excellent lubrication and oil retention, as well as maximum consistency in guide diameter, ensuring longevity. Our Guides are made with higher graphite content which is a lubricating component.
Our upgraded heavy-duty castings, thicker than OE, ensure worry-free service for hundreds of thousands of miles, with both valve stem and guide enjoying a solid lifespan
Pressure tested at 50 PSI and 210F and vacuum checked. Blueprinted to proprietary valve train geometry, to alter valve height and valve recession for maximum reliability and longevity. Our Valve stem heights are altered to remove preload on the lifter and decrease the wear as well as help the lifters live a long life.
We incorporate the use of profilometers to make sure that the smoothness and surface finish of the static area meets the Ra of the gasket manufacturer. This is mandatory for proper gasket sealing and keeps the head gasket from failing. Ra is an arithmetic average of the surface finish.
We already test our heads with this process, ensuring there’s no chance of porosity failures common in casted parts. Do the job one time the right way!
75 percent of heat dissipation occurs through the seating area of the head. It’s crucial that we use proper metallurgy for the valve seat because it serves as the conduit to transfer heat from the valve into the cooling system
We machine a receiver groove into the deck surface of the cylinder heads and insert our USA-made stainless wire, applying additional pressure to all gasket layers for effective combustion pressure sealing. These O-ringed heads are reusable, work with standard head gaskets, and need no special block machining—just surface preparation.
While we prefer the Fel-Pro Head gasket, any standard head gasket will work equally well. The O-ring acts as a heat sink from the fire ring, transferring heat into the cooling system
We only use the highest quality seats to maintain our quality. Additionally, these hardened seats also address the infamous issue of cylinder head cracking associated with the factory integrated seat
We test and balance the valve spring pressure to ensure that it remains consistent across all valves.
1 year warranty on heads
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