Keeping you Ready for the Road Ahead , the HD Value Single Convoluted Air Spring 64638/1R13-177/852 is engineered based on OEM specifications for appearance, form, fit, and functionality. Minimize your wear and tear and maximize performance by reducing isolated vibrations from load fluctuations. With this isolation of vibration, these air springs help enhance drivers’ comfort by reducing fatigue and increasing attentiveness. Enjoy a quiet, stable ride experience during changes in the vehicle’s weight with these built-to-last heavy duty air springs. 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 bag replacements that provides maximum safety, durability, and quality. FleetPride is your First Click in Heavy Duty .