Here are two 135i oil filters. OEM Mahle's & BMW's
This is my first atempt at posting pics - so bare with me.
Mahle oil filter OX 387 D vs BMW's 11 42 7 566 237
price: 8 euros vs 10 euros for the BMW filter.
Interesting enough, the BMW OE filter is made by MANN in Germany, while the OEM Mahle is made in Austria. The Bmw filter just looked better made to my eyes. Esp where the base of the filter comes together with the verticle folds of the paper filtering element. Maybe its nothing, or maybe its something? I will probably just buy and use the BMW filters from now on. Its only two euros more for the BMW filter.