2004.5-2010 GM 6.6L Duramax CNC Ported Cast Iron Cylinder Head (One Head) LLY/LBZ/LMM 2009-2010-chevrolet-express-4500-8-cyl-6-6-liter-turbo-esr2315831 Dimensions: 4-1/4" L x 2-3/8"

Dimensions: 4-1/4" L x 2-3/8" W x 1-1/4" H

5-B MFG Part # YKGM11

APG Part # ADDF357382720103 MFG Part # F357382720103 UPC 814849023126 Brand Addictive Desert Category Body Subcategory Bumper Weight 175 lbs Line Code ADD

Ballistic Billet compressor wheel

MagnaFlow MagnaFlow Conv DF 08-09 Subaru WRX 2

2004.5-2010 GM 6.6L Duramax CNC Ported Cast Iron Cylinder Head (One Head) LLY/LBZ/LMM 2009-2010-chevrolet-express-4500-8-cyl-6-6-liter-turbo-esr2315831 Dimensions: 4-1/4" L x 2-3/8"Duramax Ported Cast Iron Cylinder Head 2004. 5 2010 GM 6. 6L (One) LLY LBZ LMM The OEM Duramax cast aluminum cylinder heads fall short over time the different heat expansion rates between 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.