Here is a RealOEM link (for a 2010 USA model, anyway). The part # is 13327811227. I doubt that the part changes for different years, but you can plug in your date of manufacture (or VIN number) on RealOEM to be sure.

I believe I used ECS tuning - here is a link to what fit on my car.

Hope that helps.

Regards.

__________________
Stephen
2010 e70 35d- now driven by son #2
2005 e53 3.0 - now driven by son #1
2021 G05 45e PHEV - now driven by me
2008 ML320 CDI - driven by wife