Firestone Reversible Sleeve Suspension Air Bag, 11.81 X 6.90, Truck Part No. W01-358-8760 Firestone W01-358-8760 W01-358-8760, Firestone Reversible Sleeve Air Spring, Firestone Air Bag 8760 11.81 inches x 6.90 inches 2 Year / 200,000 Mile Warranty Aluminum