King Engine Bearings G.M.C. (Mark III) 5.7L (Size 001) Main Bearing Set

If you're rebuilding the bottom end of a GM Gen III or IV 5.7L engine, getting the main bearings right is crucial for long-term health. This main bearing set from King Engine Bearings is built with a lead-free, environmentally safe composite material layered over a bi-metal aluminum base. This construction is designed for high performance, ensuring the crankshaft has a solid, well-supported foundation to spin smoothly.

King has been specializing in bearings since 1960, focusing on producing a well-built product. This set is specifically sized at 0.001 inch undersize, which is important for applications where the crankshaft journals may have been ground undersize during a previous rebuild or for fine-tuning clearances. The Alecular high-performance composite material is a key feature, offering a durable surface for the crankshaft to ride against, helping to manage friction and heat effectively.

This set fits a wide range of popular GM vehicles, including models like the Chevrolet Silverado 1500, Cadillac Escalade, and Chevrolet Corvette. When you're putting an engine back together, using a specialized bearing like this helps ensure you're setting yourself up for a reliable build.