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The Bilstein B4 twin‑tube strut assembly for 2019–2021 BMW 330i xDrive front left replaces the factory strut to restore original ride comfort and handling. B4 parts are built to OE standards to preserve vehicle dynamics and safety. Supplied as a direct replacement assembly, the unit simplifies installation and helps return the original driving characteristics.
Bilstein 19-21 BMW 330i xDrive B4 OE Replacement Suspension Strut Assembly - Front Left
