Routes the oily breather vapors, that clogg the air cleaner element, away from your air intake. Kit includes 3/8" ID braided steel hose with two built-in banjos, filter and installation hardware. Includes both 3/8 and 1/2" banjo bolts for both Evo and Twin Cam/M8 applications. Note: This is a custom kit and may not fit give adequate clearance in combination with stock components.93-23 B.T. in custom applications