Description 1Vehicle Fitment: AC compressor control valve is replacement for Altima 2.5 Liter Engine ONLY 20132018, replacement for Altima 2.5L and 3.5L Engine 20072012, etc. 2Part Number: The referencing part number of the mechanical control valve is ECV11. Please check the part numbers whether it suits your vehicle before purchasing. 3Precise Control: The mechanical control valve enables precise control and improves the air conditioning of your vehicle for a more comfortable driving experience. 4Low Consumption: The control valve can improve the efficiency of air conditioning and reduce energy consumption, thus saving fuel costs. 5Practical Parts: The compressor mechanical control valve is the component that regulates the cooling and heating of the vehicle air conditioning system, and is professionally designed to meet your needs.