4 pack of brand new OEM Mahle OC306 oil filters without crush washers for all non liquid cooled R1200GS/RT/ST/S/R, K1200S/R/GT (2005 on), F800/650 (twins), K1600GT/GTL bikes, & F650GS twins(2009 on). Also fits all R18 models. These are OEM filters and the stock oil filter wrench will fit them. BMW OEM part # for a single filter is 11 42 7 673 541 which retails for $15.36. At times we may be out of stock on the Mahle OC306 filters. In those instances we will substitute Mann MW75 filters which are identical.