Pretty sure this is right. Blue thing is a strainer for on the pump inlet itself believe and the large one goes just under the cap where you fill it up. I noticed that when you fill the tank using a funnel, if the funnel starts to fill quicker than its flowing out the added weight makes the large filter let go and fall in the tank. Didn't know mine was floating in there for like 2 years haha. If they are floating in there they really aren't that necessary for normal operation or else your system would have failed.
Originally Posted by nae36
looks like it attaches onto the bottom of the washer-pump seal, it strains the fluid before it enters the pump. I just received the rubber seal to replace on my car and it is attached to the rubber seal. Its probably under one part number that is why you cant find it on realoem.
2001 325 Ci
Last edited by DBrown; 01-17-2013 at 08:51 PM.