Bilstein B4 OE Replacement Suspension Strut Cartridge for 1984-1987 BMW 325eBilstein Suspension Part #: 21 030505 Overview The Bilstein B4 OE Replacement Suspension Strut Cartridge is engineered to restore and maintain the original ride quality of your 1984 1987 BMW 325e. Designed with precision and built to the highest standards, these strut cartridges help ensure your vehicle retains its factory handling, comfort, and safety performance. Whether you're looking to replace worn out components or maintain your vehicle's