Keep your Peterbilt 357/378's drive axle suspension in top shape with our springs and hangers! Choose from heavy-duty parabolic springs (up to 20,000 lbs), durable aluminum and steel hangers, and smooth-riding polyurethane or rubber bushings. Complete your setup with shackles, clips, and hardware. These parts are manufactured to help improve your ride quality, assisting in handling significantly higher loads, minimizing the impact of road bumps with greater shock absorption, offering better stability, and reducing the risk of having axle sag or sway when you're cornering with your Peterbilt 357/378.