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Head Stud Replacement Kit 2001-2016 6.6L LB7 LLY LBZ LMM LML GM Duramax Diesel

Manufacturer: Xotic Performance
SKU: CP877
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Vehicle Fitments
GMCSierra 2500 HD20012016
GMCSierra 3500 HD20012016
ChevroletSilverado 2500 HD20012016
ChevroletSilverado 3500 HD20012016

DIRECT FIT REPLACEMENT - Fits selected 2001-2016 6.6L LB7 LLY LBZ LMM LML Chevy Duramax Diesel Models. Engineered to unleash more performance out of your vehicle. Centerless ground to assure perfect concentricity. Please see vehicle compatibilities below to ensure accurate fitment. 

ULTRA STRENGTH - XOTIC 7200 material properties allow for far greater tensile strength compared to 8740 chromoly steel head studs. Rated at 220,000 psi tensile strength. Threads rolled after heat treatment for optimum fatigue strength. Ample clamping strength prevents cylinder heads from lifting. 

EASY INSTALLATION - Broached stud ends install & make cylinder head removal easier. Installation manual is included with drawn diagrams to ease the installation process. Head studs are designed to retain cylinder seal even with today's extreme high pressure turbo systems. These studs far exceed clamping forces provided by standard Chevy head bolts.

KIT INCLUDES - 36x Heads Studs, 36x Nuts, 36x Hardened Parallel Washer, 8x Rocker Bolts Fastener Assembly Lubricant & Instructions Manual. Black oxide finish protects from wear and tear. Hardened parallel washers allow for uniform load distribution and accurate torque readings.

WORRY-FREE PURCHASE - Xotic Performance is dedicated to offering LIFETIME WARRANTY and full money back guarantee if you aren’t satisfied. Rigorous quality inspections are undertaken to ensure premium product standards.  

Do you have any certificate/tensile strength exam that can attest to the tensile strength you advertise?

Yes, please click on the following link for a tensile strength report by Atrona Labs. We test our head studs extensively to ensure premium quality standards. The video demonstrated in this short preview highlights the one of many spot inspections performed for our head studs. 

 Vehicle Fitments

LB7 (Found in 2001 - Early 2004 models, 8th Digit of VIN is 1) 
LLY (Found in Late 2004 - 2005 models, 8th Digit of VIN is 2)
LBZ (Found in 2006 - Early 2007 models, 8th Digit of VIN is D)
LMM (Found in Late 2007 - Early 2011 models, 8th Digit of VIN is 6)
LML (Found in Late 2011 - Current models, 8th Digit of VIN is 8)

Package Content

  • 36x Heads Studs
  • 36x Nuts
  • 36x Hardened Parallel Washer
  • 8x Rocker Bolts
  • 1x Fastener Assembly Lubricant
  • 1x Instructions Manual.
Products specifications
Proposition 65 WarningsNot For Sale in California
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