The Genuine BMW Empty Hsng. Heater-A-C W-Out Aux. Heater - 64119190077 is a component used in the heating and air conditioning system of BMW vehicles. It is an empty housing unit that does not include an auxiliary heater, which is used to provide additional heat to the cabin. This housing unit is designed to fit specific BMW models and is an essential part of the overall heating and air conditioning system. It is made of high-quality materials and is manufactured to meet the strict standards of the BMW brand. This product does not include any additional components and is intended for use as a replacement part for a damaged or malfunctioning housing unit in the heating and air conditioning system.