Does anyone know if there is a filter to change on the OAY Haldex coupling?

I saw this mounted just below/near the housing and wondering if this is a part that needs to be replaced.

Haldex Upgrade - Controller Installation Guide + Oil Change-haldex-filter-004-jpg


I know on other couplings there is a filter that gets replaced when you change the oil. I asked the local parts dept and they said no filter required...

Tried hard to get a part number off it but it's in a hard to get to place

Haldex Upgrade - Controller Installation Guide + Oil Change-haldex-filter-018-jpg

Haldex Upgrade - Controller Installation Guide + Oil Change-haldex-filter-002-jpg