Michigan Motorsports LS Main Bolt & Stud Kit - Fits 1997-2013 LS Engines - 4.8L 5.3L 5.7L 6.0L 6.2L LS1 LS2 LS3 LQ4 LM7 LC9 LR4 L96 L76 - Durable Factory Replacement

Ensure maximum crankshaft stability and bottom-end strength with this LS Main Bolt and Stud Kit, designed as a direct replacement for factory LS main bolts while also incorporating main studs for additional reinforcement. Over time, factory main bolts can weaken, stretch, or lose clamping force, leading to bearing misalignment, crankshaft instability, and potential engine failure. This complete bolt and stud kit restores factory torque specs, ensuring a solid and secure foundation for high-performance LS engine builds. The main studs in this kit help to increase overall block stability, reducing main cap walk and improving load distribution across the crankshaft main journals. This added reinforcement is particularly beneficial for high-RPM, turbocharged, and supercharged LS applications. Made from high-strength steel, these fasteners are engineered to withstand extreme loads, high-RPM stress, and heat, making them perfect for factory rebuilds, LS swaps, and forced induction applications. Whether you're refreshing a stock bottom-end or assembling a high-horsepower LS build, this main bolt and stud kit provides the reliability and durability needed for peak performance.

• Complete LS Main Bolt and Stud Kit for Maximum Bottom-End Security – This kit includes a combination of main bolts and main studs, ensuring superior clamping force, precise load distribution, and extreme durability for high-performance LS builds.
• Direct Fit for 1997-2013 LS Engines – Compatible with 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L LS-series engines, including LS1, LS2, LS3, LQ4, LM7, LC9, LR4, L96, and L76, making it a perfect replacement for worn or missing factory main bolts and an upgrade for added strength.
• Main Studs for Increased Engine Block Stability – Main studs replace standard bolts in key areas, providing improved crankshaft alignment, reduced main cap walk, and enhanced structural integrity, making them ideal for high-RPM, high-horsepower, and forced-induction applications.
• High-Strength Steel Construction for Maximum Durability – Manufactured from premium-grade steel, these bolts and studs are designed to resist stretching, heat, and high torque loads, ensuring long-term reliability in high-performance and daily-driven LS applications.
• Ideal for Stock Replacements & Performance Builds – Whether you're rebuilding, swapping, or upgrading your LS engine, this main bolt and stud kit provides the necessary reinforcement for both naturally aspirated and boosted setups, helping to prevent crankshaft movement and ensure long-term engine reliability.