aFe Momentum Intake Replacement Air Filter w/ Pro 10R Media 5-1/2 IN F x 8 IN B x 8 IN T (Inverted)Pro 10R Filter Media: This filter features ten layers of pre oiled cotton gauze media to provide maximum Longevity. Its progressive layering allows the filters to flow at high levels even when dirty, while its inverted top makes for more filter surface area, resulting in longer service intervals. This media is only available for select diesel truck applications. Pro 10R filters are easily recharged with aFe's POWER CLEANER and blue air filter oil.