This universal closed cold air intake system is genuine carbon fibre it has a removable and washable 4 layer cotton element. Suitable for forced induction, naturally aspirated, 4x4, off-road, street and racing applications. It comes in two different air box lengths 152.4mm (6") and 203.2mm (8").152.4mm (6") Air box filter dimensions: 133mm (5-1/4") long, 150mm (5-7/8") wide 203.2mm (8") Air box filter dimensions: 160mm (6-5/8") long, 150mm (5-7/8") wide