Kill Devil Diesel O-Ring Cylinder Heads 6.0 Size:20mm If you plan on running

If you plan on running a set of our street performance or competition valve springs

ARP Ultra-Torque Fastener Assembly Lubricant has been specifically designed to reduce tension preload scatter and eliminate the need to cycle high performance engine fasteners before final installation

No Limit Billet Battery hold down brackets

Works With All 6

These stronger push rod are much less likely to bend at the higher RPMs

Kill Devil Diesel O-Ring Cylinder Heads 6.0 Size:20mm If you plan on runningThe heads start off as new heavy duty castings, thicker than original equipment, then they go through a meticulous inspection process prior to machining. They are machined to our exacting, proprietary specifications including our multi angle valve seat profile (maximizes valve sealing and improve heat transfer away from the valves for long life), modified valve height to correct excessive lifter preload, and deeper valve recession to allow more piston