Keeping you Ready for the Road Ahead , the HD Value Air Spring 64562/3B12-300/4431 is built for maximum safety as a durable truck suspension part. Isolating vibrations during load fluctuation changes is paramount. These heavy duty air springs work to enhance drivers’ comfort by reducing fatigue and increasing attentiveness during such fluctuations. With long lasting corrosion-resistance of the electroplating coating of these heavy duty air bag replacements, the road is waiting for you. 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 .