The Nissens A/C Expansion Valve (999377) is a reliable, high-quality replacement part designed to keep your vehicle's AC system running smoothly. This expansion valve is designed to regulate the amount of refrigerant that flows into the evaporator and helps keep your AC system running at peak efficiency. It is constructed from durable materials and is designed to fit most vehicles. This expansion valve is easy to install and is sure to provide you with years of reliable performance. Get your Nissens A/C Expansion Valve (999377) today and keep your vehicle's AC system running smoothly.