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What colour front main bearing for my om642?

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Old 01-11-2022, 10:16 PM
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2008 Jeep Grand Cherokee (w164)
What colour front main bearing for my om642?

I have found service bulletin # LI03.20-P-048278

It is a fix for the ticking after an oil change.

I understand that the top half of the front main bearing has to be replaced.

Mercedes have improved the design to be less soft I guess.

The bulletin outlines the replacement procedure and then references different colour of bearings with different numbers.

This is the part I dont understand.

How to determine the correct one for my engine.

Am I supposed to plastigauge the front shell somehow or is there some way of determining which is the correct colour?

Any help is greatly appreciated.
Old 01-12-2022, 01:52 PM
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'17 GLS450, '14 GLK250, Grandpa's Roadster
Just a wild guess, but I'll bet the old bearing will have paint marks on it.

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