This 10 Inch tall 360 Degree radial flow air filter features our pre-oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum performance. It provides your engine with the largest amount of high-flowing air and delivers the highest power gains in most cases. This media is perfect for street and/or track use. This air filter was specially designed for the SRT Hellcat / SRT Demon / SRT Redeye. The included massive air filter is surrounded by an open-element XLPE (cross-linked polyethylene) polymer housing that minimizes warm engine air for maximum performance. Its open design allows for easy viewing of the massive air filter, yet seals to the hood to gather air from the factory hood scoop. The housing also connects to the factory headlight air inlet thanks to the scoop inlet provided.