BMW 32416851218 Power Steering Reservoir Assembly

The 32416851218 power steering fluid reservoir serves as the oil carrier for BMW hydraulic power steering systems utilizing CHF 11.S fluid. Constructed from high-temperature resistant black plastic, the unit integrates a non-serviceable filter element for contaminant removal and fluid cooling. The reservoir features a press-fit cap with sealing O-ring and multiple hose connection ports for supply, return, and vent lines. This component is a direct replacement for BMW part numbers 32 41 6 851 218 and supersedes 32416768094. It is strictly incompatible with vehicles equipped with Active Steering (option S217A). Regular replacement is recommended due to plastic degradation and filter saturation over service life. ZF Friedrichshafen AG is the original equipment manufacturer for this assembly.