PPE Ported Cast Iron Cylinder Head 04.5-10 GM 6.6L Duramax LLY/LBZ/LMM. Fits: 2004.5 - 2005 Chevy/GMC 6.6L LLY Duramax; 2006 - 2007 Chevy/GMC 6.6L LLY & LBZ Duramax; 2007.5 - 2010 Chevy/GMC 6.6L LMM Duramax.
