Michigan Motorsports LS Main Crank Bearings - Standard Size SI-Series - Fits 4.8L 5.3L 5.7L 6.0L 6.2L LS Engines - LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96 - Stock & Performance Applications

Ensure smooth crankshaft operation and reduced friction with this set of LS Main Crank Bearings, designed for stock and high-performance LS engine builds. Made from high-quality SI-Series bearing material, these standard-size main bearings provide excellent oil retention, increased load capacity, and superior heat dissipation. Over time, factory crankshaft bearings can wear down, leading to oil clearance issues, reduced engine efficiency, and potential crankshaft damage. These OEM-spec main bearings restore proper engine function, ensuring consistent oil flow and optimal bearing life. Perfect for daily drivers, LS swaps, and high-horsepower builds, these bearings are designed to handle increased engine loads while maintaining factory-level precision and smooth crankshaft rotation.

• Premium LS Main Crank Bearings for Stock & Performance Builds – Designed to provide precision fitment and long-lasting durability, these SI-Series main bearings ensure smooth engine operation in OEM rebuilds and high-performance LS applications.
• Standard Size for Direct Factory Replacement – Manufactured to exact OEM specifications, these bearings maintain proper oil clearance, reducing friction and wear for extended engine life and maximum efficiency.
• Ideal for Engine Rebuilds & Performance Upgrades – Whether you're restoring a high-mileage LS engine or building a performance block, these standard-size main bearings provide the durability and precision needed for long-term reliability.
• High-Strength Bearing Material for Increased Load Capacity – Features tri-metal construction for superior heat dissipation, oil retention, and bearing longevity, making it ideal for daily-driven vehicles and high-performance LS builds.
• Compatible with a Wide Range of LS Engines – Fits Gen 3 & Gen 4 LS engines, including 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L applications, ensuring reliable performance in naturally aspirated, turbocharged, and supercharged setups.