Upgrade your 03-06 6.0L Powerstroke with these CNC Fabrication, LLC stage 1 stock replacement o-ringed cylinder heads. CNC Fabrication Stage 1 stock replacement 18mm dowel cylinder heads for 2003-2006 6.0L Powerstroke.
FEATURES:
In-house Machined on our Sunnen seat & guide machine to exceed OEM specifications using the latest tooling Brand new upgraded castings to prevent areas known in the factory heads from cracking O-ringed to prevent head gasket failure All new intake and exhaust valves All new springs, retainers, keepers, and seals Hardened valve seats to resist wear and cracking Vacuum checked to ensure proper valve seat sealing No core return required Free ground shipping
