21006103
Engine Crankshaft Main Bearing
Mack

This main bearing is a fundamental component of the engine's crankshaft assembly, providing critical support and reducing friction during operation. Its high-quality materials and precision manufacturing ensure durability under extreme loads and temperatures. Proper functioning of this bearing is vital for maintaining engine stability, smooth rotation, and preventing costly damage. Regular inspection and replacement of worn bearings help sustain engine performance and longevity. Source One Parts Center supplies this essential part to keep your engine running reliably and efficiently.