until 25.07.2011 - this cover has no teeth to fix the position - there are two kinds of filter covers available - please check carefully - one has teeth to fix the cover, the other one has not - for more info check with our product info "IDS-0B5-Filter Covers"
This cover is supplied without o-ring - please order separately (A-ORA-ORG-119886) - the o-ring is also included in our overhaul kit A-OHK-0B5