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Unlike factory bolts
then the root cause is in the high pressure oil rail
Durable one-piece ring gear ensures long-lasting performance
Internal IFP mono-tube reservoir design separates oil from nitrogen charge
The power band will be increased both from the bottom end and the top end as well as increasing overall hp levels
PPE CNC Ported Cast Iron Cylinder Head For 2004.5-2010 GMC Chevy 6.6L Duramax load control Unlike factory boltsThe 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. PPEs new ported Cast Iron Cylinder Head is the ultimate upgrade to your
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