64GB21838P20
Main Crankshaft Bearing
Mack

This main crankshaft bearing is a critical component designed to support the engine's crankshaft, ensuring smooth rotation and optimal alignment within the engine block. Its high-quality construction provides excellent durability and resistance to wear, which is essential for maintaining engine integrity over time. Proper functioning of this bearing reduces friction and minimizes vibrations, contributing to improved engine performance and longevity. Precision manufacturing guarantees a perfect fit, preventing oil leaks and ensuring consistent oil flow to lubricate the crankshaft. This part plays a vital role in the overall reliability of heavy-duty engines, especially under demanding operational conditions. Regular inspection and timely replacement of the main bearing can prevent costly engine damage. Source One Parts Center offers this bearing as part of their extensive inventory, ensuring you receive a dependable component for your engine rebuild or repair process.