aFe Power Magnum FLOW Pro 5R Air Filter Element - 8-1/2" Base - 8-1/2" Top - 11" Tall - 4" Flange - Reusable Cotton - Blue - Universal 57135BK MAC-1X Helmet Air Pumper

MAC-1X Helmet Air Pumper

001" increments up to 6"

Cuffs are black Nomex ® with a boot cuff leg trimmed in black

1967-1974 GMC K25/K2500 Suburban

aFe Power Magnum FLOW Pro 5R Air Filter Element - 8-1/2" Base - 8-1/2" Top - 11" Tall - 4" Flange - Reusable Cotton - Blue - Universal 57135BK MAC-1X Helmet Air PumperThe Pro 5R is our most performance oriented media available, outperforming virtually all other cotton gauze media on the market today. It provides your engine with the largest amount of high flowing air, usually resulting in the highest horsepower and torque gains out of all aFes filter media options. 98. 6% Filtration Efficiency Advanced FLOW engineering (aFe Power) is a premier designer and manufacturer of automotive performance upgrade systems and