LLY, LBZ, LMM Duramax 3.5" Intake Horn for VGT Turbo. Compliment your WCFab intake kit with this high flow turbo horn. Does not have provisions for the factory PCV line or Turbo Resonator box. ONLY Fits with WCFab 3" y-bridge kit or WCF Basic Intercooler Pipe for Factory Y-Bridge. NOTE: LLY requires the use of an LBZ style Intake or WCFab 4" Intake.