Genuine OEM Volkswagen EGR Cooler, part number 03G131512AD. This critical component in the exhaust gas recirculation (EGR) system is designed to reduce the temperature of exhaust gases before they are recirculated back into the engine's intake. By cooling the exhaust gases, the EGR cooler helps to lower combustion temperatures, which in turn reduces harmful nitrogen oxide (NOx) emissions and improves engine efficiency. This metal cooler weighs approximately 2.45 kg and measures about 0.356 meters in length. Genuine OEM EGR coolers ensure optimal heat exchange efficiency and robust construction to withstand high temperatures and corrosive exhaust gases.