Crank Case Breather Pipe

The vent tubes in the oil separator system on the BMW can become clogged with contaminants from using low quality motor oil. The pressure that builds within the oil separator system can then rupture other, more expensive parts. Take a step toward preventative action by replacing the vent tubes. This low cost replacement will be one more move towards a healthier system. Need some assistance on installation? Check the online enthusiast forums. Because this is such a common problem, many people have added tutorials and DIYs to assist others in oil separator system maintenance. Small tube used to connect the PCV and the oil separator. These part commonly break or become clogged with containments from using low quality oils.