The Airsource 16 1/2" Capillary Tube A/C Expansion Valve is the perfect choice for maximum efficiency over a broad load and temperature range. This expansion valve has the highest quality of compact parts and is protected against extreme evaporating pressure. It is designed to provide reliable performance and long-lasting durability. This expansion valve is easy to install and is perfect for Peterbilt vehicles. It is an excellent choice for those looking for a reliable and efficient. FleetPride is your First Click in Heavy Duty®.