Originally Posted by Dannys M3
Hey guys I need a little help here. While inspecting my engine belts I noticed a bad section about an inch long where all but one of the ribs is missing on one side. The belt on my car is double sided. I called the local dealership and gave them my VIN. I was told RIBBED V-BELT 6PK X 1067 1 11287838200 was the part I needed. I ordered the belt from bmwpartspro.com. The belt arrived yesterday and it is single sided. When I told this to bmwpartspro the answer I received was I must have an aftermarket belt. I do not have an aftermarket pulley or belt. So my question is what is the part number I need? My car is a 07/2008 build.
I am not an expert, but having just gone through the process of selecting an underdrive pulley, here's what I have learnt:
Most likely your car requires a double sided belt due to the routing of the belt that was revised as of 06-2008 builds.
Here's a link to my thread. Look at post #3 from Tom, it clearly shows the two belt routings. The second one requires a two sided belt.