The Mishimoto 15-20 BMW F8X M3/M4 Performance Air-to-Water Intercooler Power Pack - Black Sapphire is a complete performance upgrade for your BMW F8X M3/M4. This kit includes a large, bar-and-plate intercooler, an aluminum water reservoir, a water pump, and all necessary mounting hardware and hoses. The intercooler features a larger core than the stock unit, allowing for greater cooling capacity and improved performance. The water reservoir is designed to provide a steady supply of coolant to the intercooler, while the water pump ensures that the coolant is circulated throughout the system. This kit is finished in a sleek black sapphire finish for a stylish look.