Bilstein B4 OE replacement front-left twin-tube strut assembly for BMW 550i xDrive is engineered to restore the vehicle's original ride quality while meeting or exceeding OE standards. The B4 line is specified as an ideal service replacement to bring back original comfort, handling and safety characteristics, combining twin-tube construction with Bilstein's OE-focused design to match factory performance for the specified BMW application.
Bilstein B4 OE Replacement 11-16 BMW 550i xDrive Front Left Strut Assembly