KYB Coil Spring Insulator P/N:SM5708

Quiet the front suspension and cushion the coil spring with the KYB coil spring insulator SM5708, a front upper spring seat insulator that drops in as a direct-fit replacement for the 2002-2006 Nissan Altima and the 2004-2008 Nissan Maxima. It sits between the coil spring and its seat, where old, hardened insulators let metal-to-metal contact transmit squeaks, rattles, and vibration into the chassis.

This KYB spring seat insulator is application-specific and made to restore the cushioning of the factory piece:

• Isolates noise and vibration: helps reduce the squeaks, rattles, and vibration noises that develop as the original insulator ages and hardens.
• Application-designed fit: built for the listed vehicles to help optimize suspension performance in service.
• OE-level quality: matches or exceeds the quality of the original equipment component it replaces.
• Front upper location: serves the front upper spring seat position on the applications above.

If a worn, cracked, or flattened insulator is the source of your front-suspension noise, this replaces it. Inspect both sides and replace as needed for balanced, quiet ride quality.

Interchange: 540348J001 · 54034ZK00A