Genuine OEM Audi Reducing Agent Transfer Line, part number 4M0131960. This line is responsible for safely transferring the reducing agent, such as AdBlue or Diesel Exhaust Fluid (DEF), within the vehicle's emission control system to reduce harmful nitrogen oxide emissions. It measures approximately 0.22 m in length and weighs about 0.195 kg. Using a genuine OEM transfer line ensures proper material compatibility and leak-free connections, which are critical for the effective operation and longevity of the selective catalytic reduction (SCR) system.