aFe Power Magnum FORCE 59-80882 Silicone Replacement Coupling Kit for GM Soft Part Replacement Package 4-1/4" ID x 3"L & 4-3/4" ID x 3"L Hump coupling Foam Gasket for MAS air flow sensor Coupler hose allows for expansion, movement and vibration Standard stainless steel worm-gear clamps Silicone