Prevent chassis vibrations and noise by stopping spring to chassis contact! These High Quality Urethane Spring Isolators are direct replacements for your stock OEM pieces that very quickly become dried out & worn rubber that end up being useless. These Energy Suspension Isolators will last a lot longer due to the fact that they are made of premium graphite impregnated polyutrethane. Recommended as direct replacements or any time you install lowering springs.