aFe Momentum GT Cold Air Intake Pro 5R 10-18 Lexus GX 460 V8-4.6LLarge Five Layer Performance Air Filter: Momentums innovative filter to housing interface was built to feature the largest air filter possible. With a massive 5" flange, this 9 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.