The first time I changed the oil filter in my Bavaria, I could not understand how the oil filter worked. It was just loose in its housing with a spring flopping around inside. It wasn’t until later, when I happened across an exploded diagram of the oil filter assembly, that I realized
Check the bolts holding the oil filter housing to the block on BMW 2002’s and 2002tiis.
After searching for months and wasting up to $15 in various oil filter wrenches, I discovered the EKCO Housewares jar wrench model A53KP.
A much cleaner technique to changing the oil filter