T25 Case breather tower sealing ring N90106101
When replacing or removing the crankcase ventilation system, you'll need to replace the O-ring, which ensures the seal, and you won't be able to reuse it.
It's included in a new crankcase ventilation system, but if you're reassembling the existing crankcase ventilation, you'll need to replace it separately, and there's no need to buy a complete set of gaskets.
This rubber ring is similar to the original, black in color and made from nitrile-butadiene rubber (NBR).
NBR is a synthetic rubber ideally suited to oils, greases, lubricants, hydrocarbons and certain diluted acids. NBR rubber withstands high temperatures and has good mechanical properties, particularly with regard to strength and wear.
Fits:
CT/CZ engines
Waterboxer engines
Specifications:
Inner diameter: 63 mm
Thickness: 4 mm