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

while the chemical-resistant construction stands up to harsh shop environments

MagnaFlow MagnaFlow Conv DF 08-09 Subaru WRX 2

APG Part # FUED59526409845 MFG Part # D59526409845 UPC 885463854601 Brand Fuel Wheels (Wheel Pros) Category Tire and Wheel Subcategory Wheel Weight 74 lbs Line Code FUE

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.