The Nissens Mercedes HVAC Heater Core - 72028 is a replacement heater core for Mercedes vehicles. It is designed to fit specific models and is made from high-quality materials to ensure optimal performance and durability. The heater core is an essential component of the vehicle's heating system, responsible for transferring heat from the engine to the interior of the car. This product is a direct fit replacement, making installation quick and easy. It is a reliable and cost-effective solution for maintaining the proper functioning of the vehicle's heating system.