ARP Stud kit 230-4201 with Mahle Head Gasket Set for 2004.5-2007.5 GMC 6.6L Duramax Diesel LLY/LBZ. Includes "C" 1.05mm thick Mahle Head Gaskets

• 2004.5-2005 GM 6.6L LLY Duramax Diesel
• 2006-2007.5 GM 6.6 LBZ Duramax Diesel

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