Bilstein B3 OE replacement coil spring for 2004–2007 BMW 525i rear meets OE dimensions, spring rates and design requirements for direct replacement. Manufactured from high-quality steel with hot-setting to prevent height loss, the spring is intended to restore original suspension function and safety while preserving correct ride height and handling characteristics for the specified rear application.
Bilstein 04-07 BMW 525i B3 OE Replacement Coil Spring - Rear