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With an optimized design to enhance airflow
Included with 20-1027:
20-1990-02
Performance valve seats are installed using advanced methods to ensure a perfect
BMW Crankshaft Hub Washer 11 23 8 090 136 Oil Catch Can With an optimized design toGenuine BMW Crankshaft Hub Washer 11 23 8 090 136 (11238090136) is the OE replacement washer designed for N55 and S55 engines. This critical component ensures proper seating and torque retention of the crank hub assembly, maintaining long term engine reliability under both stock and high performance conditions. BMW recommends using only new OEM hardware when servicing the crank hub, as reusing old components can compromise clamping force and lead to
