Installing or repairing an air suspension on your truck, suv, rv, class 6,7,8 truck or trailer? Need an extra or replacement air fitting? You've come to the right spot! At TruckSpring.com, we stock air fittings for 1/4 inch, 1/2 inch, and 3/8 inch air hose and air line tubing, used for installing and repairing air helper springs, air bags, and air tanks found in kits made by Air Lift, Hellwig, and Firestone. Browse around, or give us a call at 1-800-358-4751 for all of your air suspension components.