Sitting between the coil spring and strut or shock, the KYB coil spring insulator is designed primarily to reduce noise, friction, and vibration for a quieter and more comfortable driving experience. It is made tough and durable to ensure it lasts for a long time, and it is rigorously tested for efficiency and performance before it comes out of the assembly line. The same is true with the KYB coil spring seat. It’s also manufactured to meet the highest quality standards to ensure it effectively cushions the energy from bumps together with the coil spring insulator. All KYB coil spring seats and insulators are engineered to match OE specifications for a seamless fit and OE-like performance. So, the next time you need new coil spring seats and insulators, be sure to get only the ones from KYB, the preferred steering and suspension brand of professional technicians and driving enthusiasts.