The HD Value Air Spring 64285/3B12-303/4434 ensures you are Ready for the Road Ahead , providing optimal performance during changes in the vehicle’s weight, which are caused by load fluctuations. There is minimal wear and tear with vibrations being isolated during these load fluctuations. Built to last, these heavy duty air bag replacements are corrosion-resistance with the enduring electroplating coating. These suspension air springs help enhance drivers’ comfort by reducing fatigue and increasing attentiveness. FleetPride knows you need quality suspension and steering parts to reduce wear and tear and ultimately, downtime. Whether you need cab, truck or trailer air springs, we have the heavy duty air bags you need for a quiet, stable ride. FleetPride is your First Click in Heavy Duty .