4M5P7890WB Gearbox cooling oil pipe fit for ford Focus 2.0 Oil Coolers 4M5P7890WC. OE:4M5P7890WB,4M5P7890WC. Improve Engine Performance: The oil cooling pipe effectively cools the oil, reduces the oil temperature and ensures oil , thus improving engine performance. Air-cooled oil coolers consist of many cooling tubes and plates, using the airflow generated by the moving vehicle to cool the hot oil cooler core. However, air-cooled oil coolers require sufficient ventilation space and are therefore rarely used in ordinary passenger cars. Water-cooled oil coolers typically consist of an aluminum alloy casing, front and rear covers, and copper core tubes, with cooling fins on the outside of the tubes to enhance the cooling effect., Manufacturer: PUAYQBVY