This is a high-quality fuel auxiliary pump for Mercedes-Benz R129 SL500, 300SE, and SL320 models. It is a direct replacement part with part number 0004780001 / A0004780001 / A 000 478 00 01 0001. The pump is designed to fit perfectly and function seamlessly with your vehicle. It is compatible with gas fuel types and comes with a manufacturer warranty of 90 days. This product is made in Germany and features a durable construction that ensures reliable performance. It is a great replacement part for your Mercedes-Benz fuel system. Whether you're replacing a damaged or worn-out pump or upgrading your vehicle's fuel system, this auxiliary pump is a perfect choice. It is easy to install and will provide you with a smooth and efficient fuel supply.