PPE Upgraded Cast Iron Ported Cylinder Head For 01-04 GMC Chevrolet 6.6L Duramax 2003-2006 mitsubishi lancer evolution ix or Osram HX Boost

or Osram HX Boost

Finished in anodized black with the Trinity Racing logo laser-etched

Specially formed for improve suspension clearance as well as to allow for a wide range of wheel specs

Pressure switch controlled air manifold system regulates pressure between 9

incorporating a flashing amber effect

PPE Upgraded Cast Iron Ported Cylinder Head For 01-04 GMC Chevrolet 6.6L Duramax 2003-2006 mitsubishi lancer evolution ix or Osram HX BoostThe OEM Duramax cast aluminum cylinder heads fall short over time the differing heat expansion rates between the cast iron engine block and cast aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting, and or cracking in high performance applications where excessive heat is introduced. PPEs new ported LB7 Cast Iron Cylinder Head is the ultimate upgrade for