Michigan Motorsports LS Main Bolt Kit | Fits 1997-2013 LS Engines | 4.8L 5.3L 5.7L 6.0L 6.2L LS1 LS2 LS3 | OEM Style Main Cap Fasteners

This Michigan Motorsports LS main bolt kit is designed for 1997–2013 LS-based engines requiring reliable OEM-style main cap fasteners during engine rebuilds or bottom-end service. Manufactured to factory-style specifications, these bolts provide proper clamping force to secure the main caps and maintain crankshaft alignment under normal and performance operating conditions. Ideal for stock rebuilds, refreshes, and maintenance-focused engine builds, this kit ensures consistent torque retention and dependable bottom-end integrity. Designed as a direct replacement, it is a trusted solution for restoring proper engine assembly without upgrading to aftermarket hardware.

• OEM-Style Main Cap Fasteners: Designed to meet factory-style specifications for proper clamping force, fitment, and crankshaft alignment in LS engines.
• Complete LS Main Bolt Kit: Includes all required main bolts for engine assembly, making it ideal for rebuilds, refreshes, and bottom-end service.
• Reliable Bottom-End Support: Helps maintain proper main cap retention and crankshaft stability under street, towing, and mild performance use.
• Direct Replacement Fit: Installs directly in place of factory main bolts with no modifications required during engine assembly.
• Wide LS Engine Compatibility: Designed to fit a broad range of LS engines from 1997–2013 commonly used in cars, trucks, and performance builds.