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DmaxStore LLY / LBZ / LMM Duramax Head Gasket Replacement Package
DmaxStore LLY / LBZ / LMM Duramax Head Gasket Replacement Package DmaxStore LLY / LBZ / LMM Duramax Head Gasket Replacement Package DmaxStore LLY / LBZ / LMM Duramax Head Gasket Replacement Package DmaxStore LLY / LBZ / LMM Duramax Head Gasket Replacement Package

DmaxStore LLY / LBZ / LMM Duramax Head Gasket Replacement Package

$414.85
Availability: In Stock

Available Options

Add Head Bolts/Studs:



Add 8 Glow Plugs:





Add Thermostats:




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WARNING: Cancer and Reproductive Harm - p65warnings.ca.gov
Part#: M-LLY/LBZ/LMM-HG

DmaxStore LLY / LBZ / LMM Head Gasket Replacement Package

2004.5-2010 Chevy/GMC 2500HD/3500HD/LBZ LMM

Part# M-LLY/LBZ/LMM-HG


This kit contains the necessary parts you will need to replace both head gaskets on your LLY-LBZ-LMM Duramax.
Includes:

  • 1 x Genuine OE Manufacturer Left Head Gasket Part# DMAX-7785 (C-Series)
  • 1 x Genuine OE Manufacturer Right Head Gasket Part# DMAX-7788 (C-Series) 
  • 1 x DmaxStore Headgasket Install Kit with a mixture of OE and Mahle parts

Optional:

  • Genuine GM Thermostats
  • Mishimoto Thermostats
  • MAHLE Head Bolts
  • ARP Pro Series Head Studs
    • ​Recommended over the MAHLE Head Bolts, these are a superior replacement for the head bolts and are rated at 220,000 psi tensile strength.

Tech tip: Installing head gaskets on your Duramax is very technical and labor intensive. You should have strong mechanical skills to complete this job, 30-35 hours should be allocated. It is highly recommended to add an ARP head stud kit. Other repairs such as water pump and injectors should be considered since you will have easy access at this time. We use and recommend Genuin OE Manufacturer C series gasket because it is the thickest of the 3 available. Valve adjustments are not always necessary but should be checked.

DmaxStore Note: This is also a good time to replace your glow plugs. The glow plugs may need replacement due to coolant contamination. If your glow plugs haven't been replaced recently, there is a slim chance they make break off in the cylinder head during removal. It is much easier to extract a broken glow plug with the cylinder heads off.

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