The Pipercross Crank Case Breather prevents contaminated oil vapour from re-entering the engine.
This breather filter vents to the atmosphere.
It has& a female fitting rubber neck suitable for 13, 16 and 19 mm neck diameters.
They use a crushed aluminum filtration medium which is resistant to petrochemical corrosion.
It is ideal for fitting directly to rocker covers, vent pipes and breather bottles.