The product is a genuine OEM temperature control unit specifically designed for 2013-2021 Nissan NV200 and Chevrolet City Heat vehicles. It comes with the OE/OEM part numbers 275103LM5C and 275103LM5A, ensuring a perfect fit and reliable performance. This unit is 100% leak tested, providing peace of mind knowing it will function effectively in controlling the heating and cooling systems of your vehicle.