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How to Replace the Poly-V Belt on a Mercedes W124

Model: Mercedes Mercedes Various
Part: Timing belt

Video tutorial

Replacing the poly-V belt on a Mercedes W124 is a very simple task, and with the help of this short video tutorial, you will learn how to do it independently and in just a few steps. First, open the bonnet and undo the tensioner bolt using a 16mm spanner.

Using a lever, loosen the tensioner and remove the fixing bolt. At this point, remove the old belt and install the new one. Using a 3/8" extension bar, return the tensioner to its original position, tighten the fixing bolt, and run the engine for a few moments to check if the component has been installed correctly.


Updated on 31 August 2026 by ScegliAuto


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by ScegliAuto

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