aFe MagnumFORCE Stage-2Si CIA System w/ Pro 5R Filter 12-15 Porsche 911 Carrera S (991) 3.8/3.8L 1984-nissan-sentra-esi3830857 providing a smoother flow path

providing a smoother flow path to the plenum and reducing turbulence

This is the original Spec L generation (not Spec L II)

By giving each engine port its own entrance to the AOS we have allowed for more effective and faster excavation of crankcase pressure

quality and aesthetics

aFe MagnumFORCE Stage-2Si CIA System w/ Pro 5R Filter 12-15 Porsche 911 Carrera S (991) 3.8/3.8L 1984-nissan-sentra-esi3830857 providing a smoother flow pathDual 360 degree radial flow air filters feature our pre oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum performance. They provide your engine with the largest amount of high flowing air, usually resulting in the highest power gains out of all our filter media options. This media is perfect for street and or track use. Their inverted tops make for more filter surface area, resulting in longer service intervals.