Our comprehensive product line of Peterbilt 379 steer axle springs and hangers are designed to improve load handling, ride quality, and correspond with various aftermarket configurations so that you can fine-tune the performance of your Peterbilt 379 model. Select from heavy-duty aluminum alloy shims, spring hanger assemblies, steer axle shock replacements, and premium rubber/poly bushings - all engineered to meet or exceed OEM specifications. These parts help to maintain your truck's smooth ride and reduce wear and tear on the suspension system.