How long do crankshaft bearings last?
In some cases, car maintenance is straightforward and simple. Just change the oil and belts according to the manufacturer’s recommendations, listen for weird noises and keep an eye on the instrument panel for warning lights. A lot of parts give us ample warning before they give up the good fight. Unfortunately, we enjoy no such insight when it comes to crankshaft bearings. Crankshaft bearings support the crankshaft (one of the components that makes the engine rotate), which sounds simple enough. However, crankshaft bearings also have to reduce friction between the rotating crankshaft and stationary engine block, and that’s how they sustain most of the damage over their lifespan [source: Kaufman]. They usually wear out because of other engine functions, not those of t
