This OEM original hydraulic pump is compatible with various Mercedes-Benz models, such as the E-Class, SL-Class, and CLS-Class. It is designed to be used for brakes and stability control purposes. The part number A2115450047 can be superseded by other part numbers such as A0004301394 and A0054317312. This item comes with only one piece in the pack, and it is suitable for front placement on the vehicle. The pump is produced by Bosch and has interchange part numbers 0265250143, 0265250088, and 0265202063. The OE/OEM part numbers include A0084313912, A0094312712, and A0004302694. The superseded part numbers include 5.5L 5439CC 332Cu. In. V8 GAS SOHC Supercharged and CDI Sedan 4-Door Elegance Sedan 4-Door.