Double Flow air filters
The Sprint Filter Double Flow waterproof pod air filters are equipped with a reversed filtration cone providing an
increased filtering surface, thus allowing additional air into the air intake manifold. The unique configuration of the Double Flow air filter ensures that air enters the center and sides for
adequate air entry, even if the filter is positioned in an unfavorable location of the engine compartment. As all Sprint Filter P037 air filters this kind of air filters are waterproof (Sprint Filter patent)