With a rich history in racing and the street performance, Injen Technology has proven itself as a leader in filtration engineering and technology. Lab tested and race proven, Injen?s air filter line features state of the art designs and performance. All of Injen?s 8-layer cotton gauze oiled air filters feature a tightly layered media that is specified for our use, along with a proprietary filter oil that includes highly advanced tackifiers to stop as much dirt and contaminants as possible. This allows our 8-layer oiled cotton gauze air filters to flow the maximum amount of air, all while protecting your valuable engine from harmful dirt and debris. 100% cleanable with the use of our Pro Tech air filter cleaning kit ? part number X-1030. Order yours today! High Performance Air Filter; 3.75 in. Dia. Filter Neck w/Twist-Lok; 7 in. Base; 8.8 in. Pleat Height; 55 Pleats; 4 in. Dia. Top; 10.9 in. Over-All Height; Pre-Oiled; Red;