The other weekend when I did my LIM job, i took of the tensioner assembly. I had to replace it with a new one and when I was transferring all of the parts and bits from the old tensioner to the new one, I tried to remove a beige colored plastic piece from inside of the lower heater hose connection.
Well i should say that I tried to remove it and it disintegrated into bits. It looked like a filter or junk catcher of some kind so i just assumed that it wasnt essential. The car is running great, but is that there to prevent gunk from the heater core from returning to the motor? Should I try to replace it or just continue living in ignorance?