Part Number: 4160. 2x Firestone Coil-Rite Air Springs (Part #: 4160). The Firestone 4160 Coil-Rite Front Air Helper Springs are engineered to enhance the load-carrying capacity and ride quality of your 2005–2025 Ford F-250, F-350, F-450, or F-550 Super Duty equipped with front coil spring suspension.
Fairly easy to install, warming the air bag will help install during cold weather. Substantial reduction in harsh ride of 2012 F-250 at 20psi. I would strongly recommend this product along with soft ride helper rear springs to tame F-250 ride.