N5KD 6420101891 A6420101891 A6420100891 Oil Separator Breather Valves For W164 W203 W204. Part number: 6420101891 A6420101891 A6420100891 A6420102091 A6420102191 A6420100191 A6420100391 A6420100591 A6420100691 Engineered with high temperature resistant plastic and rubber for superior corrosion resistance, featuring tool installation to simplifying DIY maintenance while ensuring performances under extreme conditions. Made of robust high-strength plastic, the Oil Separator Segregator features anti-corrosion, anti-wear, high-temperature tolerance, and rust-proof properties, ensuring reliable quality and superior functionality. Designed for fuel pre-treatment, the cylinder oil separator breather valve effectively gets rid of water and impurities in fuel, preventing corrosion and wear to the fuel system and engine components caused by these elements., Manufacturer: HAYSXVR