034Motorsport 034-101-3001 Breather Hose Kit, B5 Audi A4 & Volkswagen Passat 1.8T, AEB with Automatic Transmission & ATW, Reinforced Silicone This complete silicone hose kit is designed to replace all of the crumbling plastic and rubber awfulness that is the factory breather hose system. The 034Motorsport Billet PCV Check Valve is included in this kit!