Most N55 owners know that the accessory belt and the pulleys are normal wear items. They also know that if a belt snaps, you could be looking at thousands of dollars in engine work if it gets sucked into the main bearing. This kit makes it easy to replace everything in one go. Because of the lifetime guarantee, you never have to pay for this kit again. It’s nice to get rid of that tell tale squeak and know you won’t have to deal with the fear of a shredded belt and ruined engine.

Perfect fit nice and quiet now.

Just as you described- great product. Received before expected-

Works like a dime and fits exactly

Fits perfectly and was everything I needed to complete the job no more belt and tensioner screeching a/c is more efficient with the new stronger tensioner perfect diy outcome

Great all-in-one kit. I do seem to be replacing these more than any other car but with FCP euro I don't sweat it.

My dealership recommended a replace my tensioner pulley. I have 111,000 miles so I bought the drive belt kit for my 2011 BMW 335i. I inspected my belt and pulleys and they are in great shape! I think the dealership was trying to rip me off, who knew. At any rate, this kit fits perfectly and the job went off without any problems. Before I purchased, I confirmed with FCP Euro that I chose the correct product. The customer service is excellent. I can't wait for my next project.

Started hearing an annoying chirping sound at cold start once I hit 40k miles on my 135i. Replaced the tensioner pulley and the serpentine belt only and the squeak went away! Fairly simple job. Was able to complete the job without removing the alternator fan shroud assembly. Super fast shipping and excellent products. Thank you FCP Euro!

Perfect fit, easy job to do! Will be doing business again with FCP Euro!

Got rid of the horrible squeaks from my engine bay after oil leaked onto the belt