What is a good (one that fits) oil filter wrench for the K1200RS?
Where can I get one?
I can find many that are close, but close only counts in horseshoes.
I'm looking at the full top cover wrench.
Assuming you are using an original BMW Oil-filter OR an Oil-Filter that is physically and technically (specs) equivalent, then you need a 14 flutes wrench having a diameter of 76 mm.
Most auto-parts wil have (or can get you) a LISLE Oil-Filter wrench part number 54760.
OR EVEN BETTER, if you are in need of a few spare Oil-filters at an acceptable price (much less than dealer price), then you can order a kit of 6 filters with washers + orings + filter wrench for $US$ 47 at BeemerBoneyard:
Or... just the wrench:
BeemerBoneYard always has top-notch service and sells many compatible or equivalent service parts for many BMW motorcycle models. The Bosh oil-filter they sells is not 100% the same as the original "in-the-box" from BMW dealer (made by MAHLE or MANN). However, it is a quality equivalent oil-filter that has been used by many "K brick-engine" users for many years (including me).
** P.S.: if you choose to go to auto-parts, I would suggest to remove the oil-filter cover and measure the hole opening (max diameter allowed) BEFORE you buy any wrench. I have seen 1 case where the tool number matches (54760), but the external diameter of the wrench would not slide in the hole opening. Of course, on cars this is not a problem as oil-filters are very rarely hidden inside a sump ...
I have the original BMW oil-filter wrench that fits / slide in pretty tight in the hole. HOWEVER I am not near garage right now to take measurements. Original BMW wrench is a bit expensive now, but I got mine much cheaper many years ago: