The product is an OEM Mercedes-Benz high pressure fuel pump, specifically designed for left driver side vehicles. It is suitable for various models such as E-Class, S-Class, CL-Class, and GL-Class. The pump has an interchange part number of 0261520220 and a genuine OE/OEM part number of A2780701101. It features electrical drive type and is a high-pressure pump designed for fuel injection. This genuine Mercedes-Benz part ensures quality and compatibility with the specified vehicle models.