Mercedes w220 Front Strut hydraulic seal Repair Kit L=R fix leak leaking shock Repair Kit Front Strut Left OR Right, Contains: (1) Brass Valve, (1) Steel Cap, (1) Spring Clip, (1) Moisturizing Cloth NOTE: Not for cars with Active Body Control (Code 487) Mercedes part# 220 320 25 38, by BILSTEIN (OEM).