OEM part:
2149
Paper filters when they get wet will reduce and eventually block the oil flow which causes oil starvation for vital part of the engine. This is usually the number one reason for engine damage when a bike takes on water (through the exhaust or intakes). Scotts stainless steel filter will continue to filter oil even when the oil is contaminated by water. This buys the rider time to get to a point that the oil can be changed.
These filters are reusable. They can be washed and put back into the engine. 
Fits:
2012 Ktm 250 XcF-w