Gator Fasteners Heavy Duty Main Stud Kit – 2006-2010 Chevy/GMC 6.6L Duramax Diesel LBZ/LMM (MSK66ZM)

Keep your LBZ/LMM Duramax's bottom end locked down under heavy load with the Gator Fasteners Heavy Duty Main Stud Kit for 2006-2010 Chevrolet and GMC 6.6L Duramax diesel trucks. Factory main bearing cap bolts can stretch and lose clamping force as boost, injector output, and cylinder pressure climb — this kit replaces them with reusable, precision-machined studs that keep the main bearing caps clamped tight and the crankshaft properly supported.

• Made from HD220 high-strength material rated to 220,000 PSI tensile strength
• Rolled threads after heat treating for maximum fatigue strength and thread integrity
• Precision machined and heat treated for consistent, repeatable torque values
• Complete kit includes studs, washers, and nuts for all main bearing caps
• Fits: 2006-2010 Chevrolet Silverado 2500/3500 HD and GMC Sierra 2500/3500 HD with the 6.6L LBZ or LMM Duramax diesel engine

Mfg Part #: MSK66ZM. Recommended alongside head studs for any LBZ/LMM Duramax pushed beyond stock power, towing heavy loads regularly, or being built for performance.