64GB343
Main Crankshaft Bearing
Mack

This main bearing supports the crankshaft within the engine, enabling smooth rotation and efficient power transfer. Constructed from high-grade materials, it offers excellent resistance to wear, heat, and fatigue, ensuring long-term engine reliability. Proper installation and maintenance are essential to prevent engine failure and reduce repair costs. Its durability helps sustain engine performance under demanding conditions, making it a vital component for heavy-duty applications. Source One Parts Center provides this main bearing as a dependable solution for maintaining engine integrity and operational efficiency.