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Ultimate Engine Security for Duramax LBZ/LMM

When pushing your 6.6L Duramax engine to the limit, stock main bolts simply aren't enough. The Auto Racing Products (ARP) Main Stud Kit (230-5402) is engineered to provide the superior clamping force required for high-performance diesel applications. Crafted from premium 8740 chromoly steel, these studs ensure your main caps stay perfectly aligned under extreme cylinder pressures.

Why Choose ARP Main Studs?

• Superior Material: Heat-treated 8740 chromoly steel for exceptional tensile strength.
• Precision Engineering: Rolled threads provide significantly higher fatigue strength than cut threads.
• Consistent Clamping: 12-point nuts ensure even torque distribution across the main caps.
• Corrosion Resistance: Finished in a durable black oxide coating for longevity.

This kit is specifically designed for GM Duramax LBZ and LMM engines, offering a direct fit for 2-bolt main configurations. Whether you are building a street-strip truck or a dedicated competition rig, these studs prevent main cap walk and ensure bottom-end stability. By upgrading to these heavy-duty fasteners, you are investing in the long-term health of your crankshaft and engine block. Do not compromise on your build; trust the industry standard for high-performance engine fasteners. Find all your essential engine components and high-performance hardware at GGCRACING.