Genuine OEM Volkswagen EGR Exhaust Cooler, part number 03L131511Q. This cooler plays a vital role in the exhaust gas recirculation (EGR) system by reducing the temperature of exhaust gases before they are reintroduced into the engine. This process helps to lower nitrogen oxide (NOx) emissions. Constructed from durable metal, this cooler weighs 2 kg. Choosing a genuine OEM EGR cooler ensures precise heat exchange efficiency and material integrity, which are crucial for maintaining emissions compliance and engine performance.