Bilstein B1 Air Suspension Compressors are engineered with precision to ensure maximum comfort and perfect fitment for your vehicle. A shock absorber is only as good as its attachments and service parts, therefore, Bilstein ensures that parts and accessories are manufactured using quality materials to match or exceed original equipment manufacturer standards for a comfortable driving experience. Bilstein protective tubes, air suspension compressors, bump stops and strut support bearings are a perfect replacement for your old worn-out ones.