20390836
Rubber Spring
Mack

The rubber spring is a vibration isolator used to dampen road shocks and engine vibrations to improve ride quality and component longevity. In heavy-duty Mack applications, these springs support mounts and seating assemblies, absorbing oscillations without sacrificing structural rigidity. The material formulation provides resistance to oil, fuel, and ozone, maintaining elasticity across a wide temperature range. By isolating vibration, rubber springs protect adjacent parts from fatigue and reduce noise, contributing to a quieter cab and smoother operation of suspension systems. Proper installation requires correct preload and seating, plus verification of surrounding hardware to avoid misalignment that would negate damping benefits. Over time, rubber springs may harden, crack, or lose tension due to heat cycles, leading to increased vibration or harshness. Replacing worn units restores ride comfort, preserves other components, and helps maintain predictable handling under heavy loads. For reliable sourcing and parts, turn to Source One Parts Center.