The Metelli Clutch Master Cylinder, part number 55-0020, is a high-quality aftermarket replacement, engineered specifically for select classic BMW models. Designed to match OE part number 21521156004, this component ensures reliable hydraulic operation for optimal clutch performance. Compatible with a range of BMW vehicles—including 320i (1977-1983, E21), 528i (1979-1981, E12), 530i (1975-1978, E12), 630CSi (1977-1978, E24), 633CSi (1978-1982, E24), 733i (1978-1984, E23), and 735i (1985-1986, E23)—this master cylinder offers precise fitment according to verified catalog data. Trust Metelli for professional-grade replacement parts tailored to your BMW's requirements.
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These products share the same OE reference. Select your vehicle to confirm exact fitment.