745-246430N
Main Crankshaft Bearing
Mack

This main crankshaft bearing supports the crankshaft within the engine block, ensuring smooth rotation and optimal engine performance. Its high-strength materials and precision manufacturing minimize friction and prevent excessive wear, which are critical for engine longevity. Proper installation and regular inspection help avoid catastrophic engine failure caused by bearing failure. This bearing also contributes to maintaining proper oil clearance, reducing engine noise and vibration. Reliable operation of the crankshaft bearing is fundamental for power delivery and fuel efficiency in heavy-duty engines. Source One Parts Center provides this essential component to keep your engine running reliably under demanding conditions.