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How to Replace the Serpentine Belt and Tensioner on the Mercedes C-Class W203

Model: Mercedes Classe C W203 - Years 2000-2007
Part: V-belt

In today's tutorial, you will learn how to remove and replace the serpentine belt or alternator belt and the tensioner on the Mercedes C-Class W203. First, open the hood and start by removing the engine air intake; then remove the coolant hose, as shown in the video. At this point, loosen the tensioner to remove the alternator belt; unscrew the tensioner bolts to remove it and replace it with the new one. Finally, reinstall the new original parts by following the reverse procedure!

Updated on 7 June 2026 by ScegliAuto

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by ScegliAuto

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