This is a Mercedes-Benz SBC Brake Anti Lock ABS Hydraulic Pump OEM. It is compatible with the 03-08 Mercedes SL550 SL55 AMG R230. The part number is 0004302394 / A0004302394 / A 000 430 23 94 2394. The manufacturer part number is 2115450047 / A2115450047 / A 211 545 00 47 0047. It is not a universal fitment and is not a vintage part. It is placed on the front of the vehicle.