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How to Replace the Timing Chain on the Mercedes M-Class

Model: Mercedes Classe M W166 - Years 2011-2018
Part: Timing belt

Below are the main instructions on how to remove and replace the timing chain on the Mercedes M-Class, engine code OM651. First, open the bonnet of the vehicle and begin to remove the cylinder head cover by disconnecting the various hoses and pipes; then unscrew all the screws located on the sides. Next, disconnect the serpentine belt and remove the side timing cover, gaining access to the chain; replace and install the new original chain, checking all other timing components.

Posted on 17 April 2026 by ScegliAuto

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