Brand new genuine BorgWarner 4th Generation Haldex Pump (0AY598549A) and OEM Filter (111358) factory replacement kit. Manufactured in Germany, this high-quality kit ensures optimal AWD performance by restoring the functionality of your Haldex AWD system. The 4th generation Haldex pump is essential for pre-charging the oil inside the assembly, enabling faster coupling engagement. Over time, the pump may wear out, especially in high-mileage vehicles or if regular maintenance is neglected. A failing pump can lead to power loss to the rear wheels due to fluid contamination and failure to engage AWD. Replacing your pump with this OEM kit ensures smooth AWD operation and enhances driving comfort.