Coil Spring Insulator C2Z15891 for SType and durable: antirust and anticorrosion design built to withstand road conditions and travel. Reliable performance you can count on for everyday driving. Easy to install: quick and straightforward installation on compatible vehicles, reducing installation time and effort. Part and compatibility: spring insulator part number C2Z15891; fits SType models. workmanship and direct replacement: manufactured to tight tolerances for coil springs; a direct replacement for old or damaged insulators to restore proper suspension function and ride quality. Key benefits: improves spring seating, helps reduce noise and vibration, and protects the coil spring and suspension components. Use scenarios Suspension service on an SType: worn insulators to restore ride height, stability, and smooth operation. Vehicles used for longdistance travel or frequent highway driving: maintain consistent ride quality and reduce road shock over extended trips. Routine maintenance or spring replacement: install as a direct OEMstyle replacement to prevent misalignment and uneven spring load.