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Ships within 48 hours · Estimated delivery Sep 21 - Sep 26
When installed
The fill plug is precisely positioned at the factory level
This custom fabricated kit uses 304 stainless steel
Comes complete with a safety wire provision and a copper washer for a tight seal
A specially engineered high-flow silicone coupler seamlessly connects the factory plastic tube to the PPE Zilla inlet
2004.5-2010 GM 6.6L Duramax CNC Ported Cast Iron Cylinder Head (One Head) LLY/LBZ/LMM 2021-chevrolet-express-4500-6-6l-v8-gas-esi5444970 When installedDuramax 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.
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