KYB

Spring Seat Insulator

SM5440
$25.99

In Stock Estimated Delivery in 3-6 Business Days
KYB

Spring Seat Insulator

SM5440
$25.99

In Stock Estimated Delivery in 3-6 Business Days
Authorized dealer
Free shipping on orders above $250 within the lower 48 United States
Brand new parts with warranty coverage
Free 30-day return and exchange on qualifying orders
Got Questions?
Our experts are here to help!
Overview & Specs
Part Numbers Included:
  • SM5440
Compatibility List
YearMakeModelDrivePosition
2005BuickCenturyRear Lower
2004BuickCenturyRear Lower
2003BuickCenturyRear Lower
2002BuickCenturyRear Lower
2001BuickCenturyRear Lower
2000BuickCenturyRear Lower
1999BuickCenturyRear Lower
1998BuickCenturyRear Lower
1997BuickCenturyRear Lower
2013ChevroletImpalaRear Lower
2012ChevroletImpalaRear Lower
2011ChevroletImpalaRear Lower
2010ChevroletImpalaRear Lower
2009ChevroletImpalaRear Lower
2008ChevroletImpalaRear Lower
2007ChevroletImpalaRear Lower
2006ChevroletImpalaRear Lower
2005ChevroletImpalaRear Lower
2004ChevroletImpalaRear Lower
2003ChevroletImpalaRear Lower
2002ChevroletImpalaRear Lower
2001ChevroletImpalaRear Lower
2000ChevroletImpalaRear Lower
2007ChevroletMonte CarloRear Lower
2006ChevroletMonte CarloRear Lower
2005ChevroletMonte CarloRear Lower
2004ChevroletMonte CarloRear Lower
2003ChevroletMonte CarloRear Lower
2002ChevroletMonte CarloRear Lower
2001ChevroletMonte CarloRear Lower
2000ChevroletMonte CarloRear Lower
2002OldsmobileIntrigueRear Lower
2001OldsmobileIntrigueRear Lower
2000OldsmobileIntrigueRear Lower
1999OldsmobileIntrigueRear Lower
1998OldsmobileIntrigueRear Lower
2008PontiacGrand PrixRear Lower
2007PontiacGrand PrixRear Lower
2006PontiacGrand PrixRear Lower
2005PontiacGrand PrixRear Lower
2004PontiacGrand PrixRear Lower
2003PontiacGrand PrixRear Lower
2002PontiacGrand PrixRear Lower
2001PontiacGrand PrixRear Lower
2000PontiacGrand PrixRear Lower
1999PontiacGrand PrixRear Lower
1998PontiacGrand PrixRear Lower
1997PontiacGrand PrixRear Lower

Shock Surplus handles KYB's warranty claims; if you encounter a product defect please submit a warranty claim.

View KYB Warranty Information

For more information: View the Shock Surplus Warranty Policy.

Shipping Info

Free Shipping on most orders to the lower 48 U.S. states. Truck freight items (over 100 lbs) and custom orders require a separate shipping quote.

  • Applies to items like axles, leaf springs, and long-travel kits.
  • No international shipping on freight items — only to U.S.-based freight forwarders.
  • Worldwide shipping available: Canada, Europe, UAE, Australia, and most of Asia.

Contact us for an international shipping quote.

Returns & Exchanges

30-Day Return Policy — Items must be new, unused, uninstalled, and include all original hardware.

  • No restocking fees for exchanges or gift card credit.
  • 10% restocking fee on refunds, returns cost us real money, so the 10% helps keep the lights on.
  • Installed, damaged, or dirty parts cannot be returned.
  • Any returns missing hardware or miscellaneous items, the return will be denied and returned to the buyer at the buyer's expense.

Need help? Use Live Chat or Email Us anytime.

Start a Return or Exchange

Return Shipping Responsibility

CHECKOUT+ Package and Order Protection plan provides prepaid return labels for any returned packages, this fee varies by product.

  • Our mistake (misboxed, wrong item, damaged): We cover the cost of return shipping.
  • Buyer mistake (wrong item ordered, fitment error, changed mind): Return shipping is the buyer's responsibility - unless CHECKOUT+ Package Protection has been purchased.

  • Under 50 lbs: Discounted carrier rate
  • Over 50 lbs: Discounted carrier rate + $25 oversize fee

Refunds

Refunds are issued within 5–7 business days of receiving your return.

  • Funds typically post to your account in 1–3 business days depending on your payment method.
  • There is a 10% restocking fee on all refunds. We don’t get our original shipping, labor, or transaction fees back — so the 10% restocking fee keeps the lights on.
  • You will receive an email once your refund is processed.

International Orders

  • All international orders are final sale.
  • Returns via freight forwarders only accepted if the product hasn’t left the U.S.
  • Import taxes, duties, and other possible import-related fees are the buyer’s responsibility and not included in our shipping charges.
  • We are not responsible for goods once exported outside the U.S.

Product Details

Whether you want to upgrade, add a reservoir, or find something more affordable, contact us with any questions!

Part Numbers & Details

View full product specifications

Close specs
Overview & Specs
Part Numbers Included:
  • SM5440
Compatibility List
YearMakeModelDrivePosition
2005BuickCenturyRear Lower
2004BuickCenturyRear Lower
2003BuickCenturyRear Lower
2002BuickCenturyRear Lower
2001BuickCenturyRear Lower
2000BuickCenturyRear Lower
1999BuickCenturyRear Lower
1998BuickCenturyRear Lower
1997BuickCenturyRear Lower
2013ChevroletImpalaRear Lower
2012ChevroletImpalaRear Lower
2011ChevroletImpalaRear Lower
2010ChevroletImpalaRear Lower
2009ChevroletImpalaRear Lower
2008ChevroletImpalaRear Lower
2007ChevroletImpalaRear Lower
2006ChevroletImpalaRear Lower
2005ChevroletImpalaRear Lower
2004ChevroletImpalaRear Lower
2003ChevroletImpalaRear Lower
2002ChevroletImpalaRear Lower
2001ChevroletImpalaRear Lower
2000ChevroletImpalaRear Lower
2007ChevroletMonte CarloRear Lower
2006ChevroletMonte CarloRear Lower
2005ChevroletMonte CarloRear Lower
2004ChevroletMonte CarloRear Lower
2003ChevroletMonte CarloRear Lower
2002ChevroletMonte CarloRear Lower
2001ChevroletMonte CarloRear Lower
2000ChevroletMonte CarloRear Lower
2002OldsmobileIntrigueRear Lower
2001OldsmobileIntrigueRear Lower
2000OldsmobileIntrigueRear Lower
1999OldsmobileIntrigueRear Lower
1998OldsmobileIntrigueRear Lower
2008PontiacGrand PrixRear Lower
2007PontiacGrand PrixRear Lower
2006PontiacGrand PrixRear Lower
2005PontiacGrand PrixRear Lower
2004PontiacGrand PrixRear Lower
2003PontiacGrand PrixRear Lower
2002PontiacGrand PrixRear Lower
2001PontiacGrand PrixRear Lower
2000PontiacGrand PrixRear Lower
1999PontiacGrand PrixRear Lower
1998PontiacGrand PrixRear Lower
1997PontiacGrand PrixRear Lower
Warranty

View warranty coverage

Close specs

Shock Surplus handles KYB's warranty claims; if you encounter a product defect please submit a warranty claim.

View KYB Warranty Information

For more information: View the Shock Surplus Warranty Policy.

Shipping & Returns

Free shipping within the lower 48 United States

Close specs

Shipping Info

Free Shipping on most orders to the lower 48 U.S. states. Truck freight items (over 100 lbs) and custom orders require a separate shipping quote.

  • Applies to items like axles, leaf springs, and long-travel kits.
  • No international shipping on freight items — only to U.S.-based freight forwarders.
  • Worldwide shipping available: Canada, Europe, UAE, Australia, and most of Asia.

Contact us for an international shipping quote.

Returns & Exchanges

30-Day Return Policy — Items must be new, unused, uninstalled, and include all original hardware.

  • No restocking fees for exchanges or gift card credit.
  • 10% restocking fee on refunds, returns cost us real money, so the 10% helps keep the lights on.
  • Installed, damaged, or dirty parts cannot be returned.
  • Any returns missing hardware or miscellaneous items, the return will be denied and returned to the buyer at the buyer's expense.

Need help? Use Live Chat or Email Us anytime.

Start a Return or Exchange

Return Shipping Responsibility

CHECKOUT+ Package and Order Protection plan provides prepaid return labels for any returned packages, this fee varies by product.

  • Our mistake (misboxed, wrong item, damaged): We cover the cost of return shipping.
  • Buyer mistake (wrong item ordered, fitment error, changed mind): Return shipping is the buyer's responsibility - unless CHECKOUT+ Package Protection has been purchased.

  • Under 50 lbs: Discounted carrier rate
  • Over 50 lbs: Discounted carrier rate + $25 oversize fee

Refunds

Refunds are issued within 5–7 business days of receiving your return.

  • Funds typically post to your account in 1–3 business days depending on your payment method.
  • There is a 10% restocking fee on all refunds. We don’t get our original shipping, labor, or transaction fees back — so the 10% restocking fee keeps the lights on.
  • You will receive an email once your refund is processed.

International Orders

  • All international orders are final sale.
  • Returns via freight forwarders only accepted if the product hasn’t left the U.S.
  • Import taxes, duties, and other possible import-related fees are the buyer’s responsibility and not included in our shipping charges.
  • We are not responsible for goods once exported outside the U.S.

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