Separate air and oil vapor by using a strategy to fling heavier oil and water particles outward to the sides of the can Filter the air from your crankcase and separate harmful oil from your inlet system stop oil entering the turbo and keeps the i-nlet track free from sludge Filter is easily cleanable and serviceable w / o disconnecting any hoses Vacuum limiting valve to regulate vacuum in the can Reference part number Number: 3931030955 3931017950 LC5001 LC5002 For the following Cars: 1. For crankcase ventilation( fit any vehicle up to 250 kw) 2. Specifically designed to accommodate the latest generation of turbo- engines 3. Allows flexible installation locations on the engine or in the engine compartment 4. 25mm Openings In And Out, Also Has A 12.5mm Oil Return (Allows Clean Oil To Drain Back To The Sump) Colour:Black+silver Material:Metal + plastic Package Contents: 1x Oil Catch Can Filter Note:The filter elementsis washable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.