The Mercedes-Benz mercedes W221 S63 CL63 CLS63 AMG oil filter cooler housing 1561800410 OEM is a filter/regulator from Mercedes-Benz. It conditions compressed air or hydraulic fluid by removing contaminants, adding lubrication, or regulating pressure to protect downstream components. It is commonly in pneumatic FRL (filter-regulator-lubricator) assemblies and compressed air systems.
