This kit is a direct fit for the Skunk2 Ultra Lightweight Magnesium Valve cover. It includes two -10 ORB to -10 AN fittings that directly thread into the face of the valve cover, replacing the plugs. This allows for a bolt-on solution that works with any external breather and/or oil separator systems that use -10 AN plumbing.
Also included are two stainless steel mesh filter inserts, one per fitting, meant for use as a pre-filter to reduce oil blow-by. This aids in reduction of oil collection in external breather systems which also reduces oil consumption.