Replace the restrictive accordion coupler on your LS1 and LS6 with this High Flow Power Coupler and increase air flow and performance.
Notch fits around breather tube, see black pics.
Does NOT include stock intake.
Measures: 4 3/4" Inlet / 4" Outlet
·Choose Red or Black Silicone Coupler ·Includes (2) Clamps for easy installation. ·Used for stock air duct only.