The Bilstein B4 OE Replacement twintube strut cartridge for 1989–1990 BMW 525i/535i offers a factory-style damper to restore original ride quality and handling. Engineered to meet OE standards, the cartridge provides precise construction and improved power reserves for safety, returning predictable steering feel and comfort. It’s a direct replacement for owners refreshing original front suspension damping.
Bilstein B4 OE Replacement 89-90 BMW 525i/535i Front Twintube Strut Cartridge