034Motorsport 034-101-3004 Breather Hose Kit, Mid-AMB Audi A4 & Late-AWM Volkswagen Passat 1.8T, 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. For B6 Audi A4 1.8T models with the AMB engine code in VIN range 8E-3-040000 8E-3-500000, and Volkswagen Passat 1.8T models with the AWM engine code.