I ordered both the BMW and INA time chain tensioner products from FCP Euro. The INA tensioner does not come with metal O ring and this lead to improper fitment and minor oil leakage. This should be included or mandatory add on.

Perfect fit, OEM quality product, thanks FCP..

As always the team at FCP have delivered yet another QUALITY product coupled with QUALITY service. For over 6 years now FCP has been my No.1 'go-to' for all my BMW X5 needs and have exceeded my expectations in every area, every time. I will be soon replacing my beemer with an Audi. Naturally FCP will now be my No.1 'go-to' for all my Audi needs! Other businesses could learn a thing or two from FCP.

Helped with the chain clatter on start up

OE part that does the job...

OEM quality and does the job

Perfect fit, OEM quality finish

Fitment was perfect, delivered fast.

This part is just as good as the one that was originally installed in my car. Quality is great and price tag is better. It's the real manufacturer of the part for BMW anyway. Save some money instead of paying almost the double just to have the BMW logo on it.

e39 540s are prone to issues with the timing guides and rattle on startup if you let this maintenance part go. At 115000 or so was money very well spent and an easy 10 minute fix. Do yourself a big favor and do this if you have not. It completely quiets the startup valve rattle on my 2003 540 sport. If the chain slap causes your lower timing chain guides to fail you will wish you had spent this small purchase. Engine can be totaled if the chain guides fail and the lower chain slips. Btw do not install this with a universal joint on your socket wrench as many DYIs suggest simply remove the air filter box and use a straight short extension that way you will get the torque correct on the install. Another good value from fcp.