KYB Coil Spring Insulator P/N:SM5421

Cushion the front spring and quiet a noisy, harsh-riding suspension with the KYB coil spring insulator SM5421. This spring seat insulator drops in as a direct-fit replacement for the front position on the 2007-2011 Dodge Nitro and 2002-2012 Jeep Liberty, cradling the coil spring end to isolate it from the seat and dampen the road vibration that transfers through a worn, hardened original. See the Buyer's Guide tab for engine-level fitment.

• Restores isolation: Designed to replace old, hardened insulators that let vibration and noise pass through the spring seat.
• Reduces noise: Helps cut down the squeaks, rattles and vibration noises associated with a deteriorated insulator.
• Application-specific: An OE-quality replacement insulator designed for each listed application.
• KYB quality: Made with design and quality intended to match or exceed the original equipment part.

If a cracked, flattened or hardened front spring insulator is the source of your suspension noise, this KYB unit replaces it and helps return the ride to normal operation.

Interchange: 143255