KYB Coil Spring Insulator P/N:SM5521
Cushion the coil spring and calm suspension noise with the KYB coil spring insulator SM5748, a front lower spring seat that sits between the coil spring and the suspension. This insulator drops in as a direct-fit replacement for many vehicles, among them the 2007-2017 Chevrolet Equinox, 2010-2017 GMC Terrain and 2012-2015 Chevrolet Captiva Sport; see the Buyer's Guide tab for the full list. Also listed as a Spring Seat Insulator.
If a hardened or deteriorated front lower spring seat is the source of your squeaks and vibration, this insulator replaces it. Diagnose the cause of any noise before ordering. See the Buyer's Guide tab for the full application and engine details.
What is KYB part SM5748?
It's a front lower coil spring insulator, also called a spring seat insulator. It sits between the coil spring and the suspension to cushion the spring and dampen vibration and noise.
Which vehicles does SM5748 fit?
It's a direct-fit replacement for many vehicles, among them the 2007-2017 Chevrolet Equinox, 2010-2017 GMC Terrain and 2012-2015 Chevrolet Captiva Sport. See the Buyer's Guide tab for the full list.
What position is this insulator for?
It is the front lower spring seat insulator. See the Buyer's Guide tab to confirm the correct application for your vehicle.
Why should I replace a spring seat insulator?
Old, hardened insulators stop isolating the coil spring and can cause squeaks, rattles and vibration noises. If the worn insulator is the cause, a fresh seat is designed to bring back that cushioning.
Is this a quality replacement part?
KYB spring seats and insulators are made for each application with design and build quality on par with or beyond the original equipment part.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.