KDD 6.0 Powerstroke O-Ring Cylinder Heads, Pair Valve Springs:Competition - Stage 3 (120 psi) at 55 PSI and backed

at 55 PSI and backed by our limited lifetime warranty the Titanium Signature Series lift pump is capable of supporting your Ford Powerstroke 7

which after frequent heat cycles can cause them to stretch

freeze plugs

which provides superior oiling and wear resistance in the demanding diesel application

2005-2007 Ford F250/F350 6

KDD 6.0 Powerstroke O-Ring Cylinder Heads, Pair Valve Springs:Competition - Stage 3 (120 psi) at 55 PSI and backedLead Time Applies Our popular O ring heads start off with a 100% brand new heavy duty casting made just for us, to our exacting specifications. We have improved several key design flaws with the factory cylinder heads KDD castings incorporate a higher nickel content and thicker deck surface, for a more rigid casting, and hardened alloy valve seat inserts (to prevent cracking of the valve seats like the factory heads are notorious for). Our 6. 0 heads