Another update Dec. 2015...

I installed Gates 38018 pulley for my 2006 X5 M54 engine. The Gates 38018 pulley fits well, the only issue (described in different forums) is that: one can't use the factory dust cap because the Gates pulley has round edge and thus the dust cap does not fit.
Being a bit "OCD", I smeared a bit of grease on the outside of the bearing seal just to cover it up: I don't think this is necessary at all.

So, I was looking for parts for my 2005 XC90 2.5T and happen to see the serpentine belt pulley INA 8627994 = Gates 36313.

I did some checking, and this very INA pulley might have been the pulley that was placed inside Autozone Duralast box a few years ago (not sure, but I think so).

For comparison purpose:

Gates 36313: OD= 70 mm; W = 26 mm, Bore = 17 mm
Gates 38018: OD= 70 mm; W = 25 mm, Bore = 17 mm

So, I am thinking: those who want to use the factory dust cap may want to explore the option of INA 8627994. If you do, please report back whether it fits or not. Between 25 vs 26 mm, I think it is a non-issue.



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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT