Hearing a squealing noise from your Mercedes-Benz engine, or seeing a worn-out pulley on the serpentine belt system?

This X AUTOHAUX belt tensioner assembly is a direct replacement for your old one.

It matches the original Mercedes part numbers A2762000370 and 2762000170.
It's a complete unit – the tensioner arm with the spring mechanism and the pulley wheel already attached.

It's made from quality metal to be durable and handle the engine's heat and vibration.

Before you buy, it's super important to check the fitment list!

This part fits a wide range of Mercedes models from about 2012 to 2020, mostly with 3.0L and 3.5L gasoline engines.

This includes the C-Class (C300, C350, C400, C43, C450), E-Class, GL/GLE/GLS models, ML, and more.
The job involves relieving tension on the serpentine belt, removing the old tensioner, and installing this new one.
If your tensioner is failing, replacing it prevents belt slip, ensures your alternator, power steering, and AC work properly, and stops that annoying squeal.

Always confirm your exact car model and engine before ordering.