Bilstein B3 OE replacement coil spring for 2004–2007 BMW 525i front restores the vehicle's suspension to factory specifications by matching OE dimensions and spring rates. Constructed from high-quality steel with technical end shapes and hot-setting to prevent height loss, this direct-fit spring is intended to return correct ride height, handling characteristics and suspension safety for the specified model years.
Bilstein 04-07 BMW 525i B3 OE Replacement Coil Spring - Front