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How Long Do Crankshaft Main Bearings Last? [Solved]

indefinitely Under ideal conditions, they’d last indefinitely. However, they’re usually made of copper and lead compounds, which are subject to a variety of weaknesses. The most important factor is lubrication. As long as there’s a steady flow of clean oil, the bearings will generally keep moving along fine.

Change Main bearings with crankshaft still installed

Changing

LC4 crankshaft main bearing failure right side

Why

How crankshaft bearing works. ✔

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