M-Class (W166) Produced 2012-2015

engine crankshaft bearing front replacement cost

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Old Mar 12, 2026 | 08:42 PM
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ml 350 2015
engine crankshaft bearing front replacement cost

Hello everyone, any suggestion how much is crankshaft bearing replacement cost on 300 engine, front? Sound like from airplane jet. ( I did remove belt and start engine for making Shure its from there)
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Old Mar 13, 2026 | 03:29 PM
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Originally Posted by odin101
Hello everyone, any suggestion how much is crankshaft bearing replacement cost on 300 engine, front? Sound like from airplane jet. ( I did remove belt and start engine for making Shure its from there)
A crankshaft bearing is not something that you can just replace easily. It’s engine out and disassemble. If the bearing is gone the crankshaft will be most likely scored which would destroy a new bearing even if you were to try slip a new one in.
check your oil and filter for white metal.
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Old Mar 13, 2026 | 07:50 PM
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Originally Posted by Mattml430
A crankshaft bearing is not something that you can just replace easily. It’s engine out and disassemble. If the bearing is gone the crankshaft will be most likely scored which would destroy a new bearing even if you were to try slip a new one in.
check your oil and filter for white metal.
I found problem, my bad, intake leaking, sound crazy but it is, removing oil cap its gone, thanks modern Biden AI trchnology
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Old Mar 23, 2026 | 08:40 AM
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Sounds like the crankcase ventilation system is not working properly, pulling too much vacuum. Depending on the mileage, you might want to replace that entire system. Lots of plastic parts.
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Old Mar 23, 2026 | 07:15 PM
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VCP valve membrane broke, fixed. $750 total.Mechanic did it, Hard to reach for me in back of engine, plus fuel lines need to be remove.
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