CORKSPORT 2007-2013 Mazdaspeed 3 - DISI Silicone Bypass Valve Hose - Black (Axe-6-200-black) Custom formed for perfect fitment: Molded in the shape of the OEM hose, the CorkSport Bypass Valve Hose is designed to be a clamp-in replacement for the stock non-reinforced rubber hose Five Layer Silicone Part: Contains four layers of reinforcement for a strong yet flexible connection that will not deteriorate over time and crack like the conventional stock rubber hose Includes stainless steel t-bolt clamps