Designed specifically for A4 models from 2004, direct fitment with factory specifications Compatible with the OEM 06C103235A, matching dimensions and connection points Functions as a crankcase vent breather hose to manage blow-by gases and maintain proper engine ventilation Constructed from , oil-resistant rubber to withstand under-hood heat and exposure to engine oils Supports engine function and emissions compliance by facilitating consistent crankcase pressure regulation, Manufacturer: Hoping