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KYB Suspension SM5421 Spring Seat Insulator

(2002-2012 Jeep Liberty; 2007-2011 Dodge Nitro)

Part of: KYB Suspension Spring Seat Insulator

Other options in this family: KYB Suspension SM5549 KYB Suspension SM5440 KYB Suspension SM5712 KYB Suspension SM5761 KYB Suspension SM5808

Manufacturer

Picture for manufacturer KYB Suspension

Part Number

SM5421
8 reviews
Sale Price

$16.80

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The KYB SM5421 Spring Seat Insulator is a direct-fit OE-quality replacement component designed to restore your vehicle's suspension performance and ride comfort. This precision-engineered insulator mounts between the coil spring and strut assembly, providing critical vibration damping and noise isolation.

Key Features:

  • Eliminates suspension noise and vibration caused by worn or hardened original insulators
  • OE-quality construction designed specifically for your vehicle application
  • Restores proper spring positioning and suspension geometry
  • Durable rubber compound resists aging, cracking, and deterioration
  • Direct replacement for factory spring seat insulator

Over time, original spring seat insulators become compressed, hardened, and cracked, leading to clunking noises, harsh ride quality, and reduced suspension performance. The KYB SM5421 restores the critical isolation between suspension components, ensuring smooth operation and eliminating unwanted noise transfer to the cabin. KYB's reputation for quality makes their suspension components a trusted choice for professional technicians and DIY mechanics alike.

Products specifications

Fits

2002-2012 Jeep Liberty; 2007-2011 Dodge Nitro

FEATURE AND BENEFIT 1

THE HIGHEST QUALITY REPLACEMENT SPRING INSULATOR AVAILABLE

Feature and Benefit 3

BUILT WITH DESIGN AND QUALITY THAT MATCHES OR EXCEEDS ORIGINAL EQUIPMENT

Feature and Benefit 2

REDUCES SQUEAKS, RATTLES AND VIBRATION NOISES

Excellent price on the product and shipping! Ordered on Thursday night (after they closed) and they were shipped out Monday!

great prices with easy searching.

First time I've tried these guys. Had trouble getting this product from my normal source (backordered) but Autoplicity shipped quickly and had a better price too! You know I will be back! Thanks!

Nice prices

I searched for a quality automobile battery charger and found the best priced and longest warranty "smart" charger at Autoplicity and one other seller. Autoplicity carried a wider selection of the models offered by the manufacturer.<br> Looking over the website I entered my vehicles into the fields and found quality offerings. It is worth looking at.<br> Ordering was straight forward, shipping began the next day with a tracking number, and the order arrived on time. I bookmarked the website.

Great customer service. Prompt shipment and excellent prices. I will defiantly be ordering from them again. Just wish I would have found them sooner!!

Great price, fast shipping and the items was correct. A perfect transaction. Thank you!

I received my ARP head studs as described and on time with zero problems, and cheaper than anywhere else.Will use again!!!

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