The purpose of the rubber in the mount is to reduce vibrations coming from the engine, offering a comfortable and quieter drive. Over time Engine Mounts, begin to wear and perish, causing vibrations, and potential engine damage from the excessive movement from the engine. With a variety of engine mounts available be sure to check the listing and image carefully before purchasing. The engine is rightly considered the heart of a vehicle, and is not only responsible for peak performance in terms of power and torque, but also for low fuel consumption and low emissions. Modern engines are precision assemblies - just like each individual spare part.