I would honestly give this item 5 stars but the OEM lower idler pulley went out on me after only 1 month. I am skeptical of the top pulley now since they are the same brand. Everything else is fine the belt is holding up so far but I will be replacing it since the lower idler pulley went out don't want to risk getting stranded. I will only be buying genuine Mercedes parts now.

To whom it may concern I recently ordered a belt/roller pullies/ tensioner kit for a 2010 c300 me/be and the tensioner housing for the stabil shock was not threaded and I couldn’t install the absorber, I won’t be returning it since I took the pulley off the new and installed it on my existing tensioner since the spring was still good to put everything back together. This is more for the future than me complaining. Check quality control on your builder for these little details. Other than that all parts were quality

Great price and fast shipping. The components fitted well.

Great product. Easy job - completed within 30 minutes. Not many are!!!

The aluminum nut attached to the tensioner that you’re supposed to use to put tension on to release the pin broke on me and it was a nightmare to remove the tensioner off the car! All other parts in the kit work perfectly.

Parts fit perfectly and were easy to install.

Will buy again

These parts arrived earlier than expected with the free shipping. The parts fit perfectly and were easy to install. This was my first time changing this on a Mercedes and was very surprise at the OEM quality of the parts and fitment! After the change, the car started up as normal with no issues, thanks FCP!

This is my first time to buy from, and will not be certainly my last, good parts and fast shipping. I replaced everything myself easily without expensive trip to the dealership. My Mercedes is driving like brand new again. Thank you guys...

Direct fit parts. Easy install. I was surprised I ordered on a friday morning and received my parts on Monday afternoon using their regular shipping.