Well i'll be. The 2 i had here were the same. Not sure what to say. I do use them(OEM) but also used Hi flow and the ones i listed from other suppliers. Some are taller but on ST it is no issue. Threads and diameter all match. I change oil often so am not as worried about the filter element. I have not found any that will actually give you their spec's as to filtration particle size etc. Is it a GS/GSA thing?
If you don't know where you're going
any road will get you there!
2009 BMW R1200GSA(Grey Boy)
2007 BMW F800ST(Blue Boy)